Release v0.2.1

Release v0.2.1 with changes since v0.2.0

• Release v0.2.1 (Patch) 6cfa3c6
• [timeline-chart][tsp-typescript-client] Switch to solid versions 78856b0
• Adding directory examples/plugins/ to .gitignore c15e437
• Bump express from 4.18.2 to 4.19.2 edc072f
• Bump express in /doc/adr/0002/graphql-server-prototype 82b16af
• Format examples package.json in accordance with lerna's expectations 2c395e9
• Revert "Update release instructions" b782606
• [examples] update .gitignore strategy: blanket ignore -> granular ignore 450ed94
• [license check] Add exclusion for 3PP still under IP review 00120ac
• [CI] [playwright] Run UI tests on the browser app b82e8a6
• [UI tests] [playwright] Start customizing suite for trace viewer, add a few testcases b2e731b
• [docker example] Reduce @Theia extensions to the minimum required for a Trace Viewer appliance 8e7c420
• [Docker example] Streamline trace viewer app/image 26edf9d
• [CI] Add docker-example workflow 510e3bc
• Update release instructions 5115472