Introduce dark mode in the Console

[ryaplots]

Summary

This PR adds dark mode switch in the console

Changes

• Update some component styles to have a dark theme
• Add switch theme interaction

Testing

Steps

1. Go to Theme under user settings on the left
2. Select the dark
3. See the theme change immediately
4. Click around to make sure nothing is broken

Results

Regressions

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Notes for Reviewers

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Checklist

• Scope: The referenced issue is addressed, there are no unrelated changes.
• Compatibility: The changes are backwards compatible with existing API, storage, configuration and CLI, according to the compatibility commitments in README.md for the chosen target branch.
• Documentation: Relevant documentation is added or updated.
• Testing: The steps/process to test this feature are clearly explained including testing for regressions.
• Infrastructure: If infrastructural changes (e.g., new RPC, configuration) are needed, a separate issue is created in the infrastructural repositories.
• Changelog: Significant features, behavior changes, deprecations and fixes are added to CHANGELOG.md.
• Commits: Commit messages follow guidelines in CONTRIBUTING.md, there are no fixup commits left.

[PavelJankoski]

Good job on implementing this big and useful feature!