Add quake mode terminal module

[andydotxyz]

Last feature addition for v0.4 I think :)

https://github.com/FyshOS/fynedesk/assets/294436/6dab63c2-0e55-4caa-a492-25b03318de47

Checklist:

• [ ] Tests included. <- I couldn't figure out how to test the show, which is the only real code addition as the widget is from terminal package
• [x] Lint and formatter run with no errors.
• [x] Tests all pass.

[coveralls]

Pull Request Test Coverage Report for Build 7970876290

Warning: This coverage report may be inaccurate.

This pull request's base commit is no longer the HEAD commit of its target branch. This means it includes changes from outside the original pull request, including, potentially, unrelated coverage changes.

• For more information on this, see Tracking coverage changes with pull request builds.
• To avoid this issue with future PRs, see these Recommended CI Configurations.
• For a quick fix, rebase this PR at GitHub. Your next report should be accurate.

Details

• -7 of 7 (0.0%) changed or added relevant lines in 2 files are covered.
• 32 unchanged lines in 2 files lost coverage.
• Overall coverage increased (+0.4%) to 28.969%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
internal/ui/desk.go	0	3	0.0%
internal/x11/wm/desk.go	0	4	0.0%
<!--	Total:	0	7	0.0%	-->

Files with Coverage Reduction	New Missed Lines	%
internal/ui/widgetpanel.go	11	86.71%
internal/ui/switcher.go	21	83.66%
<!--	Total:	32		-->

Totals
Change from base Build 7773297480:	0.4%
Covered Lines:	1602
Relevant Lines:	5530

---

💛 - Coveralls

[andydotxyz]

I made it lazy load the terminal, that should fix the concern I think?

[taigrr]

Looks good now!