add hook-invoke subcommand

cmd/kitty/kitty.sh

@@ -22,6 +22,9 @@ if [ -z "$kitty_skip_init" ]; then
     fi
   done
 
+  export PATH="$(pwd)/.kitty/.bin:$PATH"
+  eval "$(kitty hook-invoke $hook_name 1)"
+
   readonly kitty_skip_init=1
   export kitty_skip_init
 

cmd/kitty/main.go

@@ -70,6 +70,27 @@ func main() {
 			RunE: func(cmd *cobra.Command, args []string) error {
 				pp.Println("`@extension` is not a real command.\nIt just means you can use `kitty @xxx` to run some extension.\nFor example, if you want to run `lint-staged` extension, run `kitty @lint-staged`.")
 
+				return nil
+			},
+		},
+		&cobra.Command{
+			Use:    "hook-invoke <hook-name> <version>",
+			Args:   cobra.MinimumNArgs(2),
+			Hidden: true,
+			RunE: func(cmd *cobra.Command, args []string) error {
+				hookName := args[0]
+				hookVersion := args[1]
+
+				if hookVersion != "1" {
+					fmt.Println(`echo "Your kitty version is too low, please upgrade"
+exit 1`)
+					return nil
+				}
+
+				fmt.Println(`export KITTY_VERSION=` + version)
+
+				_ = hookName
+
 				return nil
 			},
 		},