v0.2.2

Changelog

• d076142: readme: drop Go Report Card badge (service retired), add release badge (@liu1700)
• 1197d1d: Update README.md (@liu1700)
• ab9cfe6: feat: proxy = "passthrough" | "none" service modes for mTLS / raw-TCP services (#2) (@liu1700)
• abed917: readme: tagline tweak; align plugin version to 0.2.2 (@liu1700)