v0.0.1

Changelog

• 83a8325 Add Dependabot and keyless Cosign release signing
• cc4ad99 Add generated Tailscale API SDK, extensible Cobra CLI, tests and release automation
• a79c23e Add owner-gated manual semantic releases
• 474fa89 Add same-repository Homebrew packaging and public release install checks
• 3210f56 Add secure login/logout with OS keychain storage and credential precedence tests
• 00fa974 Initialise tailctl documentation
• 36a5e6b Merge pull request #1 from davidcollom/dependabot/go_modules/go-minor-patch-357422d6de
• 3a40c05 chore(deps): bump the go-minor-patch group with 3 updates