feat: implements fiber panic recovery

Fiber includes a built-in panic recovery middleware that catches panics in route handlers and middlewares, preventing the server from crashing and allowing it to recover. Alongside this, a stack trace handler has been implemented to store system panics in the context locals (stack).

Both the S3 API server and the Admin server use a global error handler to catch unexpected exceptions and recovered panics. The middleware’s logic is to log the panic or internal error and return an S3-style internal server error response.

Additionally, dedicated **Panic** and **InternalError** loggers have been added to the `s3api` debug logger to record system panics and internal errors in the console.

s3api/controllers/base.go

@@ -18,7 +18,6 @@ import (
 	"encoding/xml"
 	"fmt"
 	"net/http"
-	"os"
 
 	"github.com/gofiber/fiber/v2"
 	"github.com/versity/versitygw/auth"
@@ -201,7 +200,7 @@ func ProcessController(ctx *fiber.Ctx, controller Controller, s3action string, s
 			return ctx.Send(s3err.GetAPIErrorResponse(serr, "", "", ""))
 		}
 
-		fmt.Fprintf(os.Stderr, "Internal Error, %v\n", err)
+		debuglogger.InernalError(err)
 		ctx.Status(http.StatusInternalServerError)
 
 		// If the error is not 's3err.APIError' return 'InternalError'