refactor: split parse and generate stage

Author: yeqown

Diff for: README.md

@@ -170,11 +170,11 @@ func main() {
 
     ```sh
     protoc \
-        -I=./examples/normal \
-        -I=./proto \
-        --plugin=protoc-gen-debug=$(which protoc-gen-debug) \
-        --debug_out="./debugdata,lang=go:./debugdata" \
-        ./examples/normal/user.proto
+      -I=./examples/pb \
+      -I=./proto \
+      --plugin=protoc-gen-debug=${debug_path} \
+      --debug_out="./internal/module/debugdata:." \
+      ./examples/pb/user.proto
     ```
 - debug [Test_ForDebug](./internal/module/fieldmask_test.go#L46) test suite
   in [internal/module/fieldmask_test.go](./internal/module/fieldmask_test.go)

Diff for: examples/Makefile

@@ -3,6 +3,6 @@ gen-pb:
 	DEBUG_PGFM=1 protoc \
 			-I./pb \
 			-I../proto \
-			--go_out=paths=source_relative,plugins=grpc:./pb \
+			--go_out=paths=source_relative:./pb \
 			--fieldmask_out=paths=source_relative,lang=go:./pb \
 			./pb/user.proto

Diff for: examples/go.mod

@@ -1,10 +1,10 @@
 module examples
 
-go 1.17
+go 1.18
 
 require (
 	github.com/stretchr/testify v1.7.0
-	github.com/yeqown/protoc-gen-fieldmask v1.0.0
+	github.com/yeqown/protoc-gen-fieldmask v0.3.5
 	google.golang.org/grpc v1.43.0
 	google.golang.org/protobuf v1.26.0
 )
@@ -20,4 +20,4 @@ require (
 	gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c // indirect
 )
 
-replace github.com/yeqown/protoc-gen-fieldmask => ../
+replace github.com/yeqown/protoc-gen-fieldmask => ../

Diff for: examples/grpc-masked-response/server.go

@@ -11,7 +11,9 @@ import (
 	"examples/pb"
 )
 
-type userServer struct{}
+type userServer struct {
+	pb.UnimplementedUserInfoServer
+}
 
 func (u userServer) GetUserInfo(
 	ctx context.Context,