feat: add nanopb support

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Resolves #164

Add nanopb support

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This currently fails with:

#0 1.036 [63] Error loading Python lib '/usr/bin/libpython3.11.so.1.0': dlopen: Error loading shared library /usr/bin/libpython3.11.so.1.0: No such file or directory
#0 1.036 --nanopb_out: protoc-gen-nanopb: Plugin failed with status code 255.

Is there any way to build this without 33MB of Python dependencies?

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@rvolosatovs this increases the image size by 20MB after compression, but otherwise works fine.

[rvolosatovs]

Just a small question, do we need to do anything to make Renovate pick up updates for this one?

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Yes, I forgot to do that for a couple of the recent additions so I will open a new PR now to update Renovate.