Make reverse proxy compatible with v2fly (#924)

* Make reverse proxy compatible with v2fly

* Fix gitignore

* Regenerate proto files

- fix v2ray name in loopback

* Fix fly.org in unit tests

transport/internet/grpc/encoding/stream_grpc.pb.go

@@ -1,4 +1,8 @@
 // Code generated by protoc-gen-go-grpc. DO NOT EDIT.
+// versions:
+// - protoc-gen-go-grpc v1.2.0
+// - protoc             v3.18.0
+// source: transport/internet/grpc/encoding/stream.proto
 
 package encoding