feat(pubsublite): start generating v1 (#2700)

* feat(pubsublite): start generating v1

* add internal gen files

Author: hongalex

internal/.repo-metadata-full.json

@@ -535,6 +535,14 @@
     "docs_url": "https://pkg.go.dev/cloud.google.com/go/pubsub/apiv1",
     "release_level": "ga"
   },
+  "cloud.google.com/go/pubsublite/apiv1": {
+    "distribution_name": "cloud.google.com/go/pubsublite/apiv1",
+    "description": "",
+    "language": "Go",
+    "client_library_type": "generated",
+    "docs_url": "https://pkg.go.dev/cloud.google.com/go/pubsublite/apiv1",
+    "release_level": "beta"
+  },
   "cloud.google.com/go/recaptchaenterprise/apiv1": {
     "distribution_name": "cloud.google.com/go/recaptchaenterprise/apiv1",
     "description": "reCAPTCHA Enterprise API",

internal/gapicgen/generator/config.go

@@ -672,6 +672,14 @@ var microgenGapicConfigs = []*microgenConfig{
 		apiServiceConfigPath:  "google/pubsub/v1/pubsub_v1.yaml",
 		releaseLevel:          "ga",
 	},
+	{
+		inputDirectoryPath:    "google/cloud/pubsublite/v1",
+		pkg:                   "pubsublite",
+		importPath:            "cloud.google.com/go/pubsublite/apiv1",
+		gRPCServiceConfigPath: "google/cloud/pubsublite/v1/pubsublite_grpc_service_config.json",
+		apiServiceConfigPath:  "google/cloud/pubsublite/v1/gapic.yaml",
+		releaseLevel:          "beta",
+	},
 	{
 		inputDirectoryPath:    "google/cloud/automl/v1",
 		pkg:                   "automl",