v21.11.0

• feat(showcase): optional component status (stable/beta/wip/deprecated)
• test(test-workspace): tweak accordion fixture default label
• chore(test-workspace): enable HMR for prism dev serve
• fix(ng-prism): repaint rulers on theme change and avoid overlay overlap
• fix(test-workspace): add body reset to test-ui-kit-prism index.html
• feat(ng-prism): reset modified inputs in controls panel
• fix(plugin-perf): use full available height in perf panel
• chore: remove obsolete design handoff files