* Add QuicException as in proposal

* Map other MsQuic errors to QuicException

* Fix System.Net.Http

* Always set HResult in QUIC-related exception

* Fix possible incorrect exception when writing into aborted stream

* Code review feedback

* Fix ref files

* Use latest generated interop

* Remove MsQuicException

* Code review feedback

* Remove TODO

* move ThrowHelper to Internal

* Code review changes

* Minor change