Add configuration wizard. (#2)

* Add configuration wizard.

internal/logger/demo_test.go

@@ -0,0 +1,70 @@
+package logger_test
+
+import (
+	"bytes"
+	"fmt"
+	"testing"
+
+	"github.com/nvm/kportal/internal/logger"
+)
+
+// This test demonstrates the logger output formats
+func TestLoggerDemo(t *testing.T) {
+	t.Skip("Demo only - run manually with: go test -v -run TestLoggerDemo")
+
+	fmt.Println("\n=== TEXT FORMAT (DEFAULT) ===")
+	textBuf := &bytes.Buffer{}
+	textLogger := logger.New(logger.LevelInfo, logger.FormatText, textBuf)
+
+	textLogger.Info("Port forward started", map[string]interface{}{
+		"forward_id": "prod/default/pod/app:8080",
+		"local_port": 8080,
+		"pod":        "app-xyz123",
+	})
+
+	textLogger.Warn("Connection failed, retrying", map[string]interface{}{
+		"forward_id": "prod/default/pod/app:8080",
+		"error":      "connection refused",
+		"retry":      3,
+	})
+
+	textLogger.Error("Failed to resolve resource", map[string]interface{}{
+		"forward_id": "prod/default/pod/app:8080",
+		"error":      "pod not found",
+	})
+
+	fmt.Print(textBuf.String())
+
+	fmt.Println("\n=== JSON FORMAT ===")
+	jsonBuf := &bytes.Buffer{}
+	jsonLogger := logger.New(logger.LevelInfo, logger.FormatJSON, jsonBuf)
+
+	jsonLogger.Info("Port forward started", map[string]interface{}{
+		"forward_id": "prod/default/pod/app:8080",
+		"local_port": 8080,
+		"pod":        "app-xyz123",
+	})
+
+	jsonLogger.Warn("Connection failed, retrying", map[string]interface{}{
+		"forward_id": "prod/default/pod/app:8080",
+		"error":      "connection refused",
+		"retry":      3,
+	})
+
+	jsonLogger.Error("Failed to resolve resource", map[string]interface{}{
+		"forward_id": "prod/default/pod/app:8080",
+		"error":      "pod not found",
+	})
+
+	fmt.Print(jsonBuf.String())
+
+	fmt.Println("\n=== LOG LEVEL FILTERING (Debug level disabled) ===")
+	filteredBuf := &bytes.Buffer{}
+	filteredLogger := logger.New(logger.LevelInfo, logger.FormatText, filteredBuf)
+
+	filteredLogger.Debug("This will not appear", nil)
+	filteredLogger.Info("This will appear", nil)
+	filteredLogger.Warn("This will also appear", nil)
+
+	fmt.Print(filteredBuf.String())
+}