Bundle Codicons using Webpack

[koesie10]

This will include the Codicons inside the webview bundle, reducing the number of files that need to be loaded and the resource roots that need to be included.

The only place where a codicon is currently used is in the repository search bar for MRVA results.

Checklist

• CHANGELOG.md has been updated to incorporate all user visible changes made by this pull request.
• Issues have been created for any UI or other user-facing changes made by this pull request.
• [Maintainers only] If this pull request makes user-facing changes that require documentation changes, open a corresponding docs pull request in the github/codeql repo and add the ready-for-doc-review label there.

[aeisenberg]

With this change, does this mean that we can remove the references to codicons when generating the webview? LIke here

vscode-codeql/extensions/ql-vscode/src/abstract-interface-manager.ts

Line 59 in d2af550

Uri.file(path.join(ctx.extensionPath, 'node_modules/@vscode/codicons/dist')),

and here

vscode-codeql/extensions/ql-vscode/src/interface-utils.ts

Line 144 in d2af550

ctx.asAbsolutePath('node_modules/@vscode/codicons/dist/codicon.css')

?

[koesie10]

Thanks for noticing, those changes probably got lost when I merged in main. Those can indeed be removed.

[charisk]

Thanks for tidying this up! Just a couple of questions/comments.