* scripts : add wc2wt.sh - create worktree from current HEAD
Add a script to create a git worktree on a new branch from the current
HEAD. Similar to pr2wt.sh but for local development branches instead of
PRs.
Usage:
./scripts/wc2wt.sh gg/new-feature
./scripts/wc2wt.sh gg/new-feature "bash -l"
Assisted-by: llama.cpp:local pi
* cont : no need to try to delete the branch
