Update wtclone to v0.2.0

Subcommand CLI (init/add/rm/fix), safe fetch refspec, migration path for
pre-0.2.0 layouts.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: Matthieu Ciappara

Formula/wtclone.rb

@@ -1,8 +1,8 @@
 class Wtclone < Formula
   desc "Bootstrap a git repository in worktree layout (bare + pointer + initial worktree)"
   homepage "https://github.com/moduloTech/wtclone"
-  url "https://github.com/moduloTech/wtclone/archive/refs/tags/v0.1.0.tar.gz"
-  sha256 "8c1a649c656f3e347697a95e0ed624432bc4058d9c522b4833c3ffb9edec2d89"
+  url "https://github.com/moduloTech/wtclone/archive/refs/tags/v0.2.0.tar.gz"
+  sha256 "c34b53f8cfadcd32ba7b51f8254d967d469028a30689fa741e5920212ab7dab4"
   license :cannot_represent
 
   def install