Add mapstring output and update the README.

README.md

@@ -34,7 +34,7 @@ Therefore, I present you the simple client to which you can copy & paste your gr
 * `GRAPHQL_ENDPOINT` - Your GraphQL endpoint. Default: `http://127.0.0.1:9090/v1/graphql`
 * `GRAPHQL_CACHE_ENABLED` -  Should the query cache be enabled? Default: `false`
 * `GRAPHQL_CACHE_TTL` -  Cache TTL in seconds for SELECT type of queries. Default: `5`
-* `GRAPHQL_OUTPUT` - Output format. Default: `byte`, available: `byte`, `string`
+* `GRAPHQL_OUTPUT` - Output format. Default: `mapstring`, available: `byte`, `string`, `mapstring`
 * `LOG_LEVEL` - Logging level. Default: `info` available: `debug`, `info`, `warn`, `error`
 * `GRAPHQL_RETRIES_ENABLE` - Should retries be enabled? Default: `true`
 * `GRAPHQL_RETRIES_NUMBER` - Number of retries: Default: `1`

base.go

@@ -33,7 +33,7 @@ func NewConnection() *BaseClient {
 	}
 
 	b.endpoint = envutil.Getenv("GRAPHQL_ENDPOINT", "https://api.github.com/graphql")
-	b.responseType = envutil.Getenv("GRAPHQL_OUTPUT", "string")
+	b.responseType = envutil.Getenv("GRAPHQL_OUTPUT", "mapstring")
 	b.validate = envutil.GetBool("GRAPHQL_VALIDATE", false)
 	b.cache.enabled = envutil.GetBool("GRAPHQL_CACHE_ENABLED", true)
 	b.cache.ttl = envutil.GetInt("GRAPHQL_CACHE_TTL", 60)

query.go

@@ -120,6 +120,14 @@ func (c *BaseClient) Query(queryContent string, queryVariables interface{}, quer
 
 func (c *BaseClient) decodeResponse(jsonData []byte) any {
 	switch c.responseType {
+	case "mapstring":
+		var response map[string]interface{}
+		err := json.Unmarshal(jsonData, &response)
+		if err != nil {
+			c.Logger.Error(c, "Error while converting to map[string]interface{};", "error", err.Error())
+			return nil
+		}
+		return response
 	case "string":
 		return helpers.BytesToString(jsonData)
 	case "byte":