Change default location of proto files

Signed-off-by: Dave Syer <david.syer@broadcom.com>

Author: dsyer

start-site/src/main/java/io/spring/start/site/extension/dependency/springgrpc/GrpcGradleGroovyBuildCustomizer.java

@@ -33,6 +33,8 @@ class GrpcGradleGroovyBuildCustomizer extends AbstractGrpcGradleBuildCustomizer
 
 	@Override
 	protected void customizeExtensions(GradleExtensionContainer extensions) {
+		extensions.customize("sourceSets", (sourceSets) -> sourceSets.nested("main",
+				(main) -> main.nested("proto", (java) -> java.invoke("srcDir", "'src/main/protobuf'"))));
 		extensions.customize("protobuf", (protobuf) -> {
 			protobuf.nested("protoc", (protoc) -> protoc.attribute("artifact", quote("com.google.protobuf:protoc")));
 			protobuf.nested("plugins", (plugins) -> plugins.nested("grpc",

start-site/src/test/java/io/spring/start/site/extension/dependency/springgrpc/SpringGrpcProjectGenerationConfigurationTests.java

@@ -81,6 +81,14 @@ void shouldAddGrpcPluginAndConfigurationForGradleGroovy() {
 						}
 					}
 				}
+				""").containsIgnoringWhitespaces("""
+				sourceSets {
+					main {
+						proto {
+							srcDir 'src/main/protobuf'
+						}
+					}
+				}
 				""");
 	}