v0.2.0

SPEAR release version v0.2.0.

What's Changed

• code improvements by @wilsonwang371 in #77
• update by @wilsonwang371 in #84
• support llamacpp backends now by @wilsonwang371 in #85
• • feat(router-filter): add gRPC filter stream protocol and hub by @wilsonwang371 in #88
• add tui for environment quick start by @wilsonwang371 in #89

Full Changelog: v0.1.0...v0.2.0