Feat optionals

[wirthual]

Draft for merging all optional packages into the Deutschland package.

This probably needs a bit of testing before it can be released.

• Should we make all subpackages optional? This is how it is now with deutschland[all] all packages will get installed
• This might be a breaking change, since an update will probably remove packages which were part of the package before (not tested yet)
• How is the version resolving? Does it take super long everywhere? Or only with poetry and on my machine?
• Can we make the package with tensorflow as dependency also optional and independent of the deutschland package? Thats a huge dependency.

@LilithWittmann let me know what you think 👍

[LilithWittmann]

Looks generally good to me. I'm not sure about the update strategy.

• Maybe for some time we make [all] the default option?
• Tensorflow issue should become obsolet with Model for CAPTCHAs in ONNX format #55.

[severinsimmler]

How is the version resolving? Does it take super long everywhere? Or only with poetry and on my machine?

It's considered best practice to just commit the poetry.lock by the way. With the poetry.lock, Poetry won't have to resolve all dependencies if you do a fresh install, but just install what's in the lockfile.

[wirthual]

I deleted the failing tests for now. Ready to merge from my side.

[LilithWittmann]

@wirthual should we try to merge this?