Migrating !803 (merged) to master and patching the CMake finding of MCFM.
MCFM now requires a cmake flag to enable building of the shared library. This is to update the documentation.
Note that in the MCFM releases since 2022 there are a few lines in the CMake missing that prevent the lib and include files from being copied over to the installation directory. This has been flagged with the relevant developers.
Test Plan
Builds fine for me with the latest MCFM release (modulo CMake patch on their side).
Example Result
Additional Checklist Items
I have updated documentation as needed
I considered if this should be cherry-picked/ported somewhere else (rel-2-x or master), and if yes, opened a corresponding issue or MR
