feat: add FPNV

Author: boikoa-gl

firebase_admin/fpnv.py

@@ -0,0 +1,19 @@
+# Copyright 2026 Google Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""Firebase Phone Number Verification (FPNV) service.
+
+This module contains functions for verifying JWTs used for
+authenticating against Firebase services.
+"""