feat(clock): add greeting/time/date widget with settings toggles

[mj0x0]

Following the previous PR. Added a greeting/time/date widget with settings toggle.

[PrettyCoffee]

Hey @mj0x0!
Once again, thank you for the contribution :)

FYI: I will create a new release once all planned changes are merged.
If I got it right, you still wanted to contribute the "expand all" button and the search engine cycling. So I will create a release after those are merged.

[mj0x0]

Hi @PrettyCoffee,
Thanks! I've opened the mask-url() fix and search-engine cycling PRs. I'm going to drop the expand-all button from upstream and keep it in my fork -- upstream, it would only work while maximized, and doing it properly at any width would need a bigger layout rework than fits here. So those two are all from me for the upcoming release.

The implementation's in my fork main branch if you ever want it as a starting point.