refactor: add hot reloading and improve logging functions

- Add command to install `air` for hot reloading in `Makefile`
- Add `dev` command to run the application with hot reload in `Makefile`
- Add `vendor` command to tidy and verify module dependencies in `Makefile`
- Update log synchronization method to use `log.Default().Sync()` in `cmd/cmd.go`
- Change variadic parameter type from `interface{}` to `any` in logging functions
- Remove `Sync` function from `pkg/log/log.go`

ref: https://github.com/uber-go/zap/issues/880
Signed-off-by: appleboy <appleboy.tw@gmail.com>

pkg/log/log.go

@@ -71,30 +71,22 @@ func Panic(msg string, fields ...zap.Field) {
 	Default().Panic(msg, fields...)
 }
 
-func Debugf(format string, args ...interface{}) {
+func Debugf(format string, args ...any) {
 	Default().Sugar().Debugf(format, args...)
 }
 
-func Infof(format string, args ...interface{}) {
+func Infof(format string, args ...any) {
 	Default().Sugar().Infof(format, args...)
 }
 
-func Warnf(format string, args ...interface{}) {
+func Warnf(format string, args ...any) {
 	Default().Sugar().Warnf(format, args...)
 }
 
-func Errorf(format string, args ...interface{}) {
+func Errorf(format string, args ...any) {
 	Default().Sugar().Errorf(format, args...)
 }
 
-func Fatalf(format string, args ...interface{}) {
+func Fatalf(format string, args ...any) {
 	Default().Sugar().Fatalf(format, args...)
 }
-
-func Sync() {
-	err := defaultLogger.Sync()
-	if err != nil {
-		Error(err.Error())
-	}
-	Info("logger has been synced")
-}