[dist] Make dvr-scan installable via pyproject.toml.

[frafra]

Migrate from the deprecated setup.py to pyproject.toml.

I did the migration using hatch, via uv tool run hatch new --init and did some minor adjustments.

It would be also possible to add optional dependencies, like opencv with pillow, but it is not possible to run dvr-scan without them, so I just made them mandatory, to reflect the current status of the software.

The tool can now be installed from git like using uv/uvx, like this:

uvx git+https://github.com/frafra/DVR-Scan.git@pyproject-toml

[frafra]

I updated the Dockerfile, so that it builds from the source code, using uv, with caching, multi-staging etc.

I set the PR as draft, since I notice that not all the code is installed when building the container, and the dynamic versioning needs to be configured in pyproject.toml.

I also noticed that the dvr-scan-app entrypoint was not defined.

[Breakthrough]

Thanks for doing this, it's been on my radar for some time but I haven't gotten around to it yet.

I also noticed that the dvr-scan-app entrypoint was not defined.

Indeed, that's only in the develop and releases/1.7 branch right now. Would it be alright if we target this PR until after v1.7 is released? I plan on doing that this weekend so you should not have to wait long.

[frafra]

Would it be alright if we target this PR until after v1.7 is released? I plan on doing that this weekend so you should not have to wait long.

I have no hurry, and the PR is not even complete, so that is totally fine to me.