Add vault-tools repository

Claude-Session: https://claude.ai/code/session_015ur3i7D2azsMAWTSVABApv

config/git.unkin.net/unkin/repository/vault-tools.yaml

@@ -0,0 +1,14 @@
+description: "Monorepo of Go CLI tools for managing Vault tokens across multiple vault instances: vctl (login/renew per-context tokens) and vctx (context-aware wrapper around the vault CLI)."
+private: false
+default_branch: "main"
+default_delete_branch_after_merge: true
+default_merge_style: "squash"
+branch_protection:
+  - rule_name: "main"
+    enable_push: false
+    status_check_contexts:
+      - "ci/woodpecker/pr/build"
+      - "ci/woodpecker/pr/test"
+      - "ci/woodpecker/pr/pre-commit"
+    approval_whitelist_users:
+      - "benvin"