Identify and lower library functions

• Add LibraryCall node for representing opaque library calls.
  • Integrate into collections analysis and GCM to properly track collection flow.
• Add rewrite-math-expressions pass to rewrite einsum reductions into LibraryCall nodes.
• Lower LibraryCall to functions in hercules_rt in RT backend.
• Add wrapper for cublasSgemm.
• Rewrite juno_matmul test on the GPU.

requested review from @aaronjc4

assigned to @rarbore2

changed the description

added 1 commit

• 82cd5671 - remove xdot

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mentioned in issue #22 (closed)

I'm not familiar with cuBLAS, does it make sense to have it as a feature that's optional?

added 3 commits

• 82cd5671...9e99a426 - 2 commits from branch main
• 3777eb4d - Merge branch 'main' into egg

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enabled an automatic merge when all merge checks for 3777eb4d pass

mentioned in commit 902f4dfc

merged