* add inotify for FreeBSD during linking

* remove FreeBSD for now

* netstandard does not understand FreeBSD

* add FreeBSD platform to HostModel Tests

* add inotify for FreeBSD during linking

* remove FreeBSD for now

* netstandard does not understand FreeBSD

* add FreeBSD platform to HostModel Tests

* Use Clang12, update LinkerArg

* WIP FreeBSD NativeAOT

* add inotify for FreeBSD during linking

* remove FreeBSD for now

* netstandard does not understand FreeBSD

* add FreeBSD platform to HostModel Tests

* WIP FreeBSD NativeAOT

* remove FreeBSD for now

* add FreeBSD platform to HostModel Tests

* Use Clang12, update LinkerArg

* Update JITTools and ObjWriter for FreeBSD-x64

* fixes for tests

* fixes for tests

* add TargetTriple for FreeBSD

* Some changes from feedback, remove out of scope

* HostModel back to netstandard2.0

* Update src/coreclr/CMakeLists.txt

* Publish crossgen2 as single-file on cross-os

* pass NativeAotSupported to MSBuild crossgen2 tasks

* Can't use NativeAOT in source build yet
Co-authored-by: NAdeel Mujahid <3840695+am11@users.noreply.github.com>

* Update private string HostFxr and HostPolicy

* Fix private string HostPolicy

* Apply suggestions from code review
Co-authored-by: NAdeel Mujahid <3840695+am11@users.noreply.github.com>
Co-authored-by: NMichal Strehovský <MichalStrehovsky@users.noreply.github.com>
Co-authored-by: NJan Kotas <jkotas@microsoft.com>
Co-authored-by: NRobin Sue <robinsue@live.de>