Add protobuf-py plugins (#2561)

This contains changes from #2553
with `registry` field added to the `buf.pluin.yaml`s and `v0.1.0`
changed to `v0.1.1`.

---------

Co-authored-by: Anuraag Agrawal <anuraaga@gmail.com>

Author: oliversun9

plugins/bufbuild/grpc-py/source.yaml

@@ -0,0 +1,3 @@
+source:
+  pypi:
+    name: protoc-gen-grpc-py

plugins/bufbuild/grpc-py/v0.1.1/.dockerignore

@@ -0,0 +1,3 @@
+*
+!Dockerfile
+!requirements.txt

plugins/bufbuild/grpc-py/v0.1.1/Dockerfile

@@ -0,0 +1,18 @@
+# syntax=docker/dockerfile:1.24
+FROM python:3.13.14-trixie@sha256:6cd5c8d0efe5d264728f3690053b26807572f25805a643395752eca19148e31c AS build
+WORKDIR /app
+RUN python -mvenv /app
+ADD /requirements.txt requirements.txt
+RUN . ./bin/activate \
+ && pip install --no-cache-dir -r requirements.txt \
+ && pip uninstall --yes pip setuptools \
+ && rm -f requirements.txt bin/activate.fish bin/activate.csh bin/Activate.ps1 \
+ && ln -sf /usr/bin/python /app/bin/python
+
+FROM gcr.io/distroless/python3-debian13:latest@sha256:178dd00f2da3271f3819df5cd327472754946c7430d82197b247e95e839a3d55 AS base
+
+FROM scratch
+COPY --link --from=base / /
+COPY --link --from=build --chmod=0755 /app /app
+USER nobody
+CMD [ "/app/bin/protoc-gen-grpc-py" ]

plugins/bufbuild/grpc-py/v0.1.1/buf.plugin.yaml

@@ -0,0 +1,18 @@
+version: v1
+name: buf.build/bufbuild/grpc-py
+plugin_version: v0.1.1
+source_url: https://github.com/bufbuild/protobuf-py
+description: Generates gRPC-Python stubs that use protobuf-py.
+deps:
+  - plugin: buf.build/bufbuild/py:v0.1.1
+spdx_license_id: Apache-2.0
+license_url: https://github.com/bufbuild/protobuf-py/blob/v0.1.1/LICENSE
+output_languages:
+- python
+registry:
+  python:
+    package_type: "runtime"
+    requires_python: ">=3.10"
+    deps:
+      # https://pypi.org/project/grpcio/
+      - "grpcio>=1.68"

plugins/bufbuild/grpc-py/v0.1.1/requirements.txt

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+protoc-gen-grpc-py==0.1.1
+protobuf-py==0.1.1

plugins/bufbuild/py/source.yaml

@@ -0,0 +1,3 @@
+source:
+  pypi:
+    name: protoc-gen-py

plugins/bufbuild/py/v0.1.1/.dockerignore

@@ -0,0 +1,3 @@
+*
+!Dockerfile
+!requirements.txt

plugins/bufbuild/py/v0.1.1/Dockerfile

@@ -0,0 +1,18 @@
+# syntax=docker/dockerfile:1.24
+FROM python:3.13.14-trixie@sha256:6cd5c8d0efe5d264728f3690053b26807572f25805a643395752eca19148e31c AS build
+WORKDIR /app
+RUN python -mvenv /app
+ADD /requirements.txt requirements.txt
+RUN . ./bin/activate \
+ && pip install --no-cache-dir -r requirements.txt \
+ && pip uninstall --yes pip setuptools \
+ && rm -f requirements.txt bin/activate.fish bin/activate.csh bin/Activate.ps1 \
+ && ln -sf /usr/bin/python /app/bin/python
+
+FROM gcr.io/distroless/python3-debian13:latest@sha256:178dd00f2da3271f3819df5cd327472754946c7430d82197b247e95e839a3d55 AS base
+
+FROM scratch
+COPY --link --from=base / /
+COPY --link --from=build --chmod=0755 /app /app
+USER nobody
+CMD [ "/app/bin/protoc-gen-py" ]

plugins/bufbuild/py/v0.1.1/buf.plugin.yaml

@@ -0,0 +1,20 @@
+version: v1
+name: buf.build/bufbuild/py
+plugin_version: v0.1.1
+source_url: https://github.com/bufbuild/protobuf-py
+description: Generates idiomatic Python code from Protocol Buffers definitions using protobuf-py.
+spdx_license_id: Apache-2.0
+license_url: https://github.com/bufbuild/protobuf-py/blob/v0.1.1/LICENSE
+output_languages:
+- python
+registry:
+  python:
+    package_type: "runtime"
+    requires_python: ">=3.10"
+    deps:
+      # https://pypi.org/project/protobuf-py/
+      - "protobuf-py>=0.1.1"
+  opts:
+    # Produce PEP 420 namespace packages so the py, grpc-py, and dependency
+    # SDKs for a module can share the same top-level package.
+    - init_files=false

plugins/bufbuild/py/v0.1.1/requirements.txt

@@ -0,0 +1,2 @@
+protoc-gen-py==0.1.1
+protobuf-py==0.1.1