Add swift grpc code-gen and use latest grpcSwift pod

protobuf/build.gradle

@@ -12,17 +12,28 @@ configurations {
         canBeResolved = false
         canBeConsumed = true
     }
+    // For Swift Codegen
+    swift {
+        canBeConsumed = true
+        canBeResolved = false
+    }
 }
 
 protobuf {
     protoc { artifact = 'com.google.protobuf:protoc:3.11.0' }
     plugins {
+        swift {
+            path = "$projectDir/grpc_plugins/protoc-gen-swift"
+        }
         grpc {
             artifact = 'io.grpc:protoc-gen-grpc-java:1.28.1' // CURRENT_GRPC_VERSION
         }
         grpc_python {
             path = "$projectDir/grpc_plugins/grpc_python_plugin_1.28.1-${osdetector.classifier}"
         }
+        grpc_swift {
+            path = "$projectDir/grpc_plugins/protoc-gen-grpc-swift-$osdetector.classifier"
+        }
     }
     generateProtoTasks {
         all().each { task ->
@@ -32,12 +43,16 @@ protobuf {
                 python {}
             }
             task.plugins {
+                swift{}
                 grpc { // Options added to --grpc_out
                     option 'lite'
                 }
                 grpc_python {
                     outputSubDir = 'python'
                 }
+                grpc_swift {
+                    outputSubDir = 'swift'
+                }
             }
         }
     }
@@ -47,8 +62,13 @@ task packPythonGrpc(type: Zip, dependsOn: protobuf.generateProtoTasks.all()) {
     from protobuf.generatedFilesBaseDir + '/main/python'
 }
 
+task packSwiftGrpc(type: Zip, dependsOn: protobuf.generateProtoTasks.all()) {
+    from protobuf.generatedFilesBaseDir + '/main/swift'
+}
+
 artifacts {
     python(packPythonGrpc)
+    swift(packSwiftGrpc)
 }
 
 dependencies {