Start moving clipboard kitten to kitty-tool

tools/cmd/tool/main.go

@@ -4,8 +4,10 @@ package tool
 
 import (
 	"fmt"
+
 	"kitty/tools/cli"
 	"kitty/tools/cmd/at"
+	"kitty/tools/cmd/clipboard"
 	"kitty/tools/cmd/edit_in_kitty"
 	"kitty/tools/cmd/update_self"
 )
@@ -21,4 +23,6 @@ func KittyToolEntryPoints(root *cli.Command) {
 	update_self.EntryPoint(root)
 	// edit-in-kitty
 	edit_in_kitty.EntryPoint(root)
+	// clipboard
+	clipboard.EntryPoint(root)
 }