fix: library mapping in linking checks

[zelosleone]

closes https://github.com/prefix-dev/rattler-build/issues/1684

now we will:

• populate library mappings after package installation
• hopefully do more accurate detection of system vs conda-provided libraries but i will wait for wolf's opinion on this
• ensure cache dependencies are also properly checked

since library mapping is also improved, now we will be able to track files provided by each package as well!

[wolfv]

IMO this is too much change in a single PR.

What I would be fine with is if we change the overlinking checks to not rely on the host prefix files but instead combine the packages from host prefix & cache host prefix and determine the shared libraries based on the paths.json file from the different packages (without touching the actual filesystem).

[wolfv]

I am thinking the best thing would be to add a new file in the cache folder that would capture these mappings (or let the first post-processing step create this file).

We could make a new file that would be called something like "post-process-mappings.json" and place it in the $CACHE_FOLDER/post-process-mappings.json.

Then, every process using the cache contents could also (re-)use the post process mapping file.

Would that make sense and perhaps simplify things?

[yeetfield]

Looking forward to this one; thanks for your work here!