System optimizations

[odudex]

Description

Problem: A damaged camera currently renders devices unusable.

Solution: This PR addresses the issue by allowing Krux to operate without a functioning camera and includes some performance optimizations.

Changes:

• Krux can now function without a camera, enabling key loading from storage or manual input, as well as signing transactions using an SD card.
• The camera is reinitialized only when necessary, reducing load time.

Other Optimizations

• Battery status reading and its display are now decoupled from the menu rendering process, improving menu responsiveness on devices equipped with a PMU.
• Translation refactor reduces total firmware size in ~5% and increases free RAM at boot in ~3%

What is the purpose of this pull request?

• [ ] Bug fix
• [ ] New Feature
• [ ] Documentation update
• [x] Other

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 94.96124% with 13 lines in your changes missing coverage. Please review.

Project coverage is 94.67%. Comparing base (4495164) to head (223d74f). Report is 22 commits behind head on develop.

Files with missing lines	Patch %	Lines
src/krux/pages/home_pages/sign_message_ui.py	93.25%	12 Missing :warning:
src/krux/camera.py	94.11%	1 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## develop #453 +/- ## =========================================== - Coverage 94.82% 94.67% -0.15% =========================================== Files 60 70 +10 Lines 7434 7575 +141 =========================================== + Hits 7049 7172 +123 - Misses 385 403 +18 ```

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[odudex]

Translation refactor reduces total firmware size in ~5% and increases free RAM at boot in ~3%

[jdlcdl]

I've visually reviewed the code changes in 30 files here.

Much of this I've tested on Amigo (whose camera works fine), but none since this pr was readied last week, nor any of the changes since "translation optimizations". Currently I'm having personal hw problems and cannot build for my amigo but I expect this to be resolved soon and will edit this message when done.

[odudex]

Thank you Jean! I also ended up adding new Sparrow's SD message signing feature here too, and this will require a few more tests to be written. I hope you have your hw issues solved without too much hassle 🙏.

[jdlcdl]

Message signing via qrcode and via sdcard with sparrow 2.0.0 worked fine for me. All tests passed since commit 4855a70 and poetry run poe pre-commit also completed successfully. I like the baked translations tables separated per locale so that krux is loading a much smaller module and the others -- or the last-one-used can be garbage-collected.