* Migrate to swift 6.0 & swift-gRPC 2.0
The following migrates to swift 6.0, and also
migrate to swift-grpc 2.0 that uses swift-nio
under the hood to provide nicer API and async await
Adds sendable to enum & update @_implementationOnly imports to use internal imports
* Address PR comments regarding misspelling & proper method naming.
* Fix binary output different in different platform, due to the nan serialization
* Add check generated code on windows ci
* Remove resdundant script
* Fix eof, and check script
* Minor bug in gen code script
* Fix windows script, remove redundant scripts
* Undelete redundante codes
* Fix github action
* Ignore eof generate grpc
Co-authored-by: Derek Bailey <derekbailey@google.com>
rboullard
mustiikhalil