LAI: creating mirror package

[Borda]

What does this PR do?

repacing meta-package by mirror-package
interested in cross imports use copy source files
Requires (?) #15095
Closes #15122
Closes #15297

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Did you have fun?

Make sure you had fun coding 🙃

cc @justusschock @awaelchli @rohitgr7 @tchaton @Borda

[Borda]

dropping building older CUDA images with olderPT version because of Apex, see: #15345

Will re-check when CI is green

[carmocca]

The checkgroup.yml is broken after the master merge. Please be very careful with the update as errors there can block master. If you are unsure, let me make the updates.

[Borda]

Please be very careful with the update as errors there can block master. If you are unsure, let me make the updates.

sorry, and for sure will do :) from now on 🐰

[Borda]

as we are going to drop support for PT 19 in #15347 I am dropping testing for oldes and monolitic pkg

[carmocca]

as we are going to drop support for PT 19 in #15347 I am dropping testing for oldes and monolitic pkg

I suggest we keep them in this PR in case this is merged and #15347 does not make it in time before the release (maybe because it gets blocked or PyTorch delays its release). So I would revert your latest commit

[Borda]

I suggest we keep them in this PR in case this is merged and #15347 does not make it in time before the release

so how about keeping them but not setting them as required for now and @justusschock is checking them...

[carmocca]

Okay. Fine with me