chore: Shared common scanner

[M123-dev]

What

We had to get to the old state of the continuous delivery pipeline to allow to build a dedicated F-Droid build without non open source parts, namely ML Kit. To be able to build them I had to extract ZXing and ML Kit in theire own packages which we have as dependencies in smoothie. As they are only used in the entry point and in no other file the build still works when commenting out the not used scanner.

Automating this will be done in the next PR.

To be able to share the scanner around in the code, I created a new shared scanner interface.

• Created the new packages
• Moved the ML Kit and Zxing scanner to the new packages
• Removed the camera awesome scanner
• Removed the old scanner_type implementation
• I have left the old currently not anymore in use scan visor untouched to not collide with feat: 3873 - less raw scan visor #3879
• Some unrelated devcontainer.json changes. I worked in a GitHub code space on a public computer, interesting experience.

Part of

• Publish new app on F-Droid #3872
• Upgrade the barcode scan to flutter 3.7 #3712
• [Planning] Modularization of the codebase #3084
• F-Droid #3053
• [Tracker] Update the GitHub release pipeline #2771

[monsieurtanuki]

Hi @M123-dev, looks good to me!
I have minor comments; feel free to ignore them.
And let's go to the next step!

[M123-dev]

Thanks for your review @monsieurtanuki, good things you mentioned. I've applied your suggestions :D