* start 2021-04-16 process
Major new things:
* update to macOS Big Sur (11.*)
* switch from VirtualBox to Parallels due to ^ (and also ARM)
Minor new things:
* update from xcode CLT 12 to 12.4
This PR includes new stuff for creating the base box for parallels.
Still to do: using the new box type.
* update the vagrantfile stuff
* link the CI to the new version
* modify how macOS boxes are made
the Vagrantfile for the final VM will only download the azure pipeline stuff
this allows us to keep the versions of brew applications stable
* fix cpus and memory
* add vagrant plugins to installables
* Skip cppgraphqlgen ICE.
* [sdformat6] Remove unneeded include(FindBoost) which causes problems when the system cmake version doesn't match the one deployed by vcpkg.
* switch to dmg for installing osxfuse/sshfs
* Set cores to 11 (leaving 1 thread for host)
Co-authored-by: Billy Robert ONeal III <bion@microsoft.com>
