refactor: centralize logging and update resource initialization

This commit refactors the logging mechanism across the application by replacing direct logger calls with a centralized logging approach using the `common` package. Key changes include:

- Replaced instances of `logger.SysLog` and `logger.FatalLog` with `common.SysLog` and `common.FatalLog` for consistent logging practices.
- Updated resource initialization error handling to utilize the new logging structure, enhancing maintainability and readability.
- Minor adjustments to improve code clarity and organization throughout various modules.

This change aims to streamline logging and improve the overall architecture of the codebase.

controller/playground.go

@@ -56,5 +56,5 @@ func Playground(c *gin.Context) {
 	//middleware.SetupContextForSelectedChannel(c, channel, playgroundRequest.Model)
 	common.SetContextKey(c, constant.ContextKeyRequestStartTime, time.Now())
 
-	Relay(c)
+	Relay(c, types.RelayFormatOpenAI)
 }