Applying Host Catalog comments to Projects (#105)

* NewService for the project service now returns a non pointer and an error.

* Replacing t.Fatal calls with require.NoError calls.

* Initialize empty slices following the recommended way.

* Don't inline the prefix strings when validating requests.

* Check error when cleaning up the test.

* Add check that update updates the time.

* Use google.golang.org/protobuf where possible instead of github.com/golang/protobuf.

* Shorten the validateX function names.

* Inline API responses.

* Change test cleanup error logging to t.Errorf.

* Remove unneeded creation of an extra project.

* Inline regex check for invalid id.

* Build the pb.Project inline when converting from db to wire proto.

* Change stored repos into repo creating functions.

* Using iam.TestScopes instead of creating them myself.

* Remove out of date comments.

* Update name to match go test naming standards.

* Adding project service comments.

* Using scopeType's new prefix method inside scope.go

* Setting test project's name and desc to default to pass tests.

* Change host catalog to project in test.

* Fixing merge errors.

* Fixing some more merge errors.

* Fix typo in comments.

* Fix typos in project_service.go.

* Update error indicating provided id and the expected prefix.

* Make the RepoFactory types in a common directory.

internal/servers/controller/handler.go

@@ -77,7 +77,11 @@ func handleGrpcGateway(c *Controller) (http.Handler, error) {
 	if err := services.RegisterHostServiceHandlerServer(ctx, mux, &hosts.Service{}); err != nil {
 		return nil, fmt.Errorf("failed to register host service handler: %w", err)
 	}
-	if err := services.RegisterProjectServiceHandlerServer(ctx, mux, projects.NewService(c.IamRepoFn)); err != nil {
+	ps, err := projects.NewService(c.IamRepoFn)
+	if err != nil {
+		return nil, fmt.Errorf("failed to create project handler service: %w", err)
+	}
+	if err := services.RegisterProjectServiceHandlerServer(ctx, mux, ps); err != nil {
 		return nil, fmt.Errorf("failed to register project service handler: %w", err)
 	}