OKF Workbench 0.2.0

What's Changed

• Hide orphan concepts from editor diagnostics by @koizumikento in #34
• Add OKF Workbench sidebar navigation by @koizumikento in #35
• Prepare OKF Workbench 0.2.0 release by @koizumikento in #36
• Handle generated view commands in compatibility gate by @koizumikento in #37
• Record OKF Workbench 0.2.0 qualification evidence by @koizumikento in #38

Full Changelog: v0.1.2...v0.2.0