[DO NOT MERGE] Switch from webpack and babel to vite

[AlanGreene]

Changes

NOTE: This PR is not intended to be merged in its current state. It will be used for discussion about potential changes to the Dashboard, its build process, user-facing enhancements, etc.

Any accepted changes will then be separated out and PRs submitted with the usual documentation, tests, etc.

This is still a work in progress, not all features and functionality have been tested.

TODO:

• compare bundle content + sizes (JS chunks seem bigger)
• verify Carbon styling (dark mode, hover states, etc.)
• split chunks (started with YAMLEditor)
• verify impact on consumers of the packages
• … ?

Submitter Checklist

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• Tests included if any functionality added or changed
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• Release notes block below has been updated with any user facing changes (new features, significant UI changes, API changes, bug fixes, changes requiring upgrade notices or deprecation warnings)
• Release notes contains the string "action required" if the change requires additional action from users switching to the new release

Release Notes

NONE

[tekton-robot]

Skipping CI for Draft Pull Request.
If you want CI signal for your change, please convert it to an actual PR.
You can still manually trigger a test run with /test all

[tekton-robot]

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[AlanGreene]

Most of this has been covered by #3031 and #3032, the only things remaining are the common Loading component and lazy-loading the YAMLEditor.

[tekton-robot]

@AlanGreene: PR needs rebase.

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