Complete rebuild of the plugin

* Fix bug affecting Azure OIDC authentication ( and most likely others )

* Fixes issue #51

* Ensure that appended roles are unique. Update the documentation.

* Improvements targetting possible memory usage spikes.

* Additional fixes and cleanup

* Refactoring code to fix the issues identified by the users.

* Modernize run

* Fieldalignment

* Multiple changes to improve performance and reduce complexity.
- Optimise the errors and recovery.
- Deduplicate code in metadata cache.
- Remove unused performance monitoring code.
- Simplify session management and settings handling.

* Fix claims issue.

* Add ability to overwrite the default scopes in the settings file

* Well.. that escalated quickly.

Completely forgot that Traefik uses outdated Yaegi and requires compatibility with 1.20 ( pre-generic Go code ).

* Bugfix #51: Ensures that user provided scopes overrides work.

* fixup! Bugfix #51: Ensures that user provided scopes overrides work.

* fixup! fixup! Bugfix #51: Ensures that user provided scopes overrides work.

* Abstract the provider logic into a separate package.

* Additional micro fixes and cleanups.

* Simplify all the things.

* fixup! Simplify all the things.

* fixup! fixup! Simplify all the things.

* fixup! fixup! fixup! Simplify all the things.

* fixup! fixup! fixup! fixup! Simplify all the things.

* ...

* Cleanup tests.

* fixup! Cleanup tests.

* fixup! fixup! fixup! Cleanup tests.

* fixup! fixup! fixup! fixup! Cleanup tests.

* fixup! fixup! fixup! fixup! fixup! Cleanup tests.

* Issue #53: Fix CSRF token handling in reverse proxy

1. ✅ HTTPS Detection Fixed (session.go:723)
- Now uses X-Forwarded-Proto header instead of r.URL.Scheme
- Properly detects HTTPS in reverse proxy environments
2. ✅ SameSite Cookie Attribute Fixed
- Removed automatic SameSiteStrictMode for HTTPS (would break OAuth)
- Keeps SameSiteLaxMode to allow OAuth callbacks from external domains
- Only uses Strict for AJAX requests which don't involve OAuth redirects
3. ✅ Cookie Domain Handling Fixed
- Now respects X-Forwarded-Host header for cookie domain
- Ensures cookies are set for the public domain, not internal proxy domain
4. ✅ EnhanceSessionSecurity Properly Integrated
- Function is now actually called during session save
- Applies security enhancements without breaking OAuth flow

Why Issue #53 Failed Before:

1. Cookies were not marked Secure in HTTPS environments (browser wouldn't send them back)
2. If they had been Secure with SameSite=Strict, Azure callbacks would still fail
3. Cookie domain might have been wrong (internal vs public domain)

Why It Works Now:

1. Cookies are properly marked Secure for HTTPS
2. Uses SameSite=Lax to allow OAuth provider callbacks
3. Cookie domain uses public domain from X-Forwarded-Host
4. CSRF token persists through the entire OAuth flow

* Next set of enhancements together with memory usage improvements.

* Memory leak fixes and optimisations.

* CSRF and Cookie Domain fixes

* fixup! CSRF and Cookie Domain fixes

* Metadata cache leak fix + profiling

* fixup! Metadata cache leak fix + profiling

* Memory leaks hunting, part 1337.

* Further pursue of perfection.

* fixup! Further pursue of perfection.

* fixup! fixup! Further pursue of perfection.

* fixup! fixup! fixup! Further pursue of perfection.

* fixup! fixup! fixup! fixup! Further pursue of perfection.

* fixup! fixup! fixup! fixup! fixup! Further pursue of perfection.

* fixup! fixup! fixup! fixup! fixup! fixup! Further pursue of perfection.

* fixup! fixup! fixup! fixup! fixup! fixup! fixup! Further pursue of perfection.

* fixup! fixup! fixup! fixup! fixup! fixup! fixup! fixup! Further pursue of perfection.

* fixup! fixup! fixup! fixup! fixup! fixup! fixup! fixup! fixup! Further pursue of perfection.

* Clear race conditions

* fixup! Clear race conditions

* Weekend fun with memory leaks

* Splitting code into multiple files with reasonable testing coverage.

```
ok      github.com/lukaszraczylo/traefikoidc    117.017s        coverage: 72.6% of statements
ok      github.com/lukaszraczylo/traefikoidc/auth       0.505s  coverage: 87.1% of statements
ok      github.com/lukaszraczylo/traefikoidc/circuit_breaker    0.283s  coverage: 99.0% of statements
        github.com/lukaszraczylo/traefikoidc/config             coverage: 0.0% of statements
ok      github.com/lukaszraczylo/traefikoidc/handlers   0.349s  coverage: 98.2% of statements
ok      github.com/lukaszraczylo/traefikoidc/internal/providers (cached)        coverage: 94.3% of statements
ok      github.com/lukaszraczylo/traefikoidc/middleware 0.808s  coverage: 78.0% of statements
ok      github.com/lukaszraczylo/traefikoidc/recovery   0.653s  coverage: 100.0% of statements
ok      github.com/lukaszraczylo/traefikoidc/session/chunking   (cached)        coverage: 87.8% of statements
ok      github.com/lukaszraczylo/traefikoidc/session/core       (cached)        coverage: 85.6% of statements
ok      github.com/lukaszraczylo/traefikoidc/session/crypto     (cached)        coverage: 81.8% of statements
ok      github.com/lukaszraczylo/traefikoidc/session/storage    (cached)        coverage: 93.5% of statements
ok      github.com/lukaszraczylo/traefikoidc/session/validators (cached)        coverage: 98.8% of statements
````

* fixup! Splitting code into multiple files with reasonable testing coverage.

* fixup! fixup! Splitting code into multiple files with reasonable testing coverage.

* Weekend fun with further optimisations.

* fixup! Weekend fun with further optimisations.

* fixup! fixup! Weekend fun with further optimisations.

* fixup! fixup! fixup! Weekend fun with further optimisations.

* fixup! fixup! fixup! fixup! Weekend fun with further optimisations.

* fixup! fixup! fixup! fixup! fixup! Weekend fun with further optimisations.

* Pre-release cleanup.

* Enhance test coverage.

* fixup! Enhance test coverage.

* fixup! fixup! Enhance test coverage.

* fixup! fixup! fixup! Enhance test coverage.

vendor/github.com/stretchr/testify/assert/forward_assertions.go

@@ -0,0 +1,16 @@
+package assert
+
+// Assertions provides assertion methods around the
+// TestingT interface.
+type Assertions struct {
+	t TestingT
+}
+
+// New makes a new Assertions object for the specified TestingT.
+func New(t TestingT) *Assertions {
+	return &Assertions{
+		t: t,
+	}
+}
+
+//go:generate sh -c "cd ../_codegen && go build && cd - && ../_codegen/_codegen -output-package=assert -template=assertion_forward.go.tmpl -include-format-funcs"