feat: Replace cli to cobra (#1855)

* Replace cli

* Replace cli

* Replace cli

* Format code

* Add compare case

* Add compare case

* Add compare case

* Support go style flag

* Support go style flag

* Add test case

tools/goctl/compare/compare.go

@@ -0,0 +1,11 @@
+package main
+
+import "github.com/zeromicro/go-zero/tools/goctl/compare/cmd"
+
+// EXPRIMENTAL: compare goctl generated code results between old and new, it will be removed in the feature.
+// TODO: BEFORE RUNNING: export DSN=$datasource, the database must be gozero, and there has no limit for tables.
+// TODO: AFTER RUNNING: diff --recursive old_fs new_fs
+
+func main() {
+	cmd.Execute()
+}