Feat migrate core to new oscd UI components

[stee-re]

No description provided.

[ca-d]

Thank you for this work, the substantial changes you made are looking great and working fine on my machine! Also, the improvements to naming and CI that you made are much appreciated, thanks for putting in the extra effort on those fronts.

There are three very minor things I've noticed about the incidental changes included in this pull request:

• husky pre-commit hooks don't seem to be automatically registered any more on my machine after the bump from version 4 to version 9. Is this still working for you? If not, do we maybe need to add something to our pre-install script to register them? Also, what do you think about adding commitlint to our pre-commit hooks?
• Some of the visual changes in the "update screenshots" commit seem unintentional to me at first glance, like a different tab being selected (maybe 1-based vs 0-based indexing?), tab selection looking different, or the app bar seeming slightly taller than before. Have you checked the visual diffs at the end, and if so, are these changes intended?
• I don't really see the need for separating the tests for editing/plugging/oscd-shell any more, since they haven't been separately testable mixins in a while. Do you think the same way, and if so, would you consider consolidating all unit tests into a single oscd-shell.spec.ts?

[stee-re]

@ca-d thanks for your feedback.

• Husky is back working and commitlint has also been added.
• The visual regression differences were down to timing issues which only affected the tests.
• With regards to merging the test files, I'm concerned about the size of our files already, I'm not comfortable making them even bigger.

Other smaller changes also thrown in:

• I updated our test related dependencies to what @open-wc are recommending.
• The filename for the zipped release artifact was corrected
• Added status badges to our README.md
• Updated README.md references to @omicronenergy/oscd-shell
• Figured out that the meaning of life is actually 42

[ca-d]

LGTM, great work!

Also, thanks for figuring out that meaning question.