Start moving clipboard kitten to kitty-tool

tools/cmd/clipboard/main.go

@@ -0,0 +1,18 @@
+// License: GPLv3 Copyright: 2022, Kovid Goyal, <kovid at kovidgoyal.net>
+
+package clipboard
+
+import (
+	"fmt"
+	"kitty/tools/cli"
+)
+
+var _ = fmt.Print
+
+func clipboard_main(cmd *cli.Command, args []string) (int, error) {
+	return 0, nil
+}
+
+func EntryPoint(parent *cli.Command) {
+	create_cmd(parent, clipboard_main)
+}