feat(logging): add detailed logging throughout application components

- Implement logging in router setup, auth handlers, and frpc operations
- Add SoftwareInfo struct for version tracking and logging
- Enhance error messages with more context and logging
- Replace direct error returns with formatted error logging
- Add debug logs for token operations and request validations

router.go

@@ -3,9 +3,11 @@ package main
 import (
 	"net/http"
 	"strings"
+	"super-frpc/postLog"
 )
 
 func setupRoutes() {
+	postLog.Info("Setting up routes...")
 	http.HandleFunc("/register", RegisterHandler)
 	http.HandleFunc("/login", LoginHandler)