Improves icon usage and generation

[d13]

• improves glicons build:
  • generates icon map of characters for use in web components and sass
• improves codicons build:
  • generates icon map of characters for use in web components and scss
  • uses new map to generate CSS selectors
• adds scss mixins to create custom selectors for icons
• removes duplicate codicon SVGs from glicons
• removes glicons and codicons SCSS imports from the Commit Graph (~34k)

[Copilot]

Copilot reviewed 16 out of 31 changed files in this pull request and generated no suggestions.

Files not reviewed (15)

• .prettierignore: Language not supported
• images/icons/template/component-map.hbs: Language not supported
• images/icons/template/mapping.json: Language not supported
• images/icons/template/sass-map.hbs: Language not supported
• package.json: Language not supported
• src/webviews/apps/plus/graph/graph.scss: Language not supported
• src/webviews/apps/shared/glicons.scss: Language not supported
• src/webviews/apps/shared/styles/icons/glicons-map.scss: Language not supported
• src/webviews/apps/plus/graph/actions/fetchButton.tsx: Evaluated as low risk
• src/webviews/apps/commitDetails/components/gl-wip-details.ts: Evaluated as low risk
• src/webviews/apps/plus/home/components/active-work.ts: Evaluated as low risk
• src/webviews/apps/commitDetails/components/gl-status-nav.ts: Evaluated as low risk
• src/webviews/apps/plus/graph/actions/pushPullButton.tsx: Evaluated as low risk
• src/commands/quickCommand.buttons.ts: Evaluated as low risk
• src/webviews/apps/plus/home/components/branch-section.ts: Evaluated as low risk

Comments skipped due to low confidence (3)

src/webviews/apps/plus/graph/GraphWrapper.tsx:1247

• [nitpick] The icon name 'custom-start-work' might be incorrect. Verify if it should be 'custom-git-branch-create'.

<CodeIcon className="action-button__icon" icon="custom-start-work" />

src/webviews/apps/plus/graph/GraphWrapper.tsx:1190

• [nitpick] The icon name 'gl-worktrees-view' might be incorrect. Verify if it should be 'glicon-repositories-view'.

<CodeIcon icon="gl-worktrees-view" aria-hidden="true" />

src/webviews/apps/plus/graph/GraphWrapper.tsx:1321

• [nitpick] Ensure that the conditional icon name 'filter${hasFilters ? '-filled' : ''}' is correct and matches the original intent.

<CodeIcon icon={`filter${hasFilters ? '-filled' : ''}`} />