Add filters for Buf Connect RPC protocol. (#24836)

Signed-off-by: John Chadwick <jchadwick@buf.build>

Mirrored from https://github.com/envoyproxy/envoy @ 455409c9d924337c935e8fafd8371b12352cca3d

BUILD

@@ -163,6 +163,7 @@ proto_library(
         "//envoy/extensions/filters/http/cdn_loop/v3:pkg",
         "//envoy/extensions/filters/http/composite/v3:pkg",
         "//envoy/extensions/filters/http/compressor/v3:pkg",
+        "//envoy/extensions/filters/http/connect_grpc_bridge/v3:pkg",
         "//envoy/extensions/filters/http/cors/v3:pkg",
         "//envoy/extensions/filters/http/csrf/v3:pkg",
         "//envoy/extensions/filters/http/custom_response/v3:pkg",

envoy/extensions/filters/http/connect_grpc_bridge/v3/BUILD

@@ -0,0 +1,12 @@
+# DO NOT EDIT. This file is generated by tools/proto_format/proto_sync.py.
+
+load("@envoy_api//bazel:api_build_system.bzl", "api_proto_package")
+
+licenses(["notice"])  # Apache 2
+
+api_proto_package(
+    deps = [
+        "@com_github_cncf_udpa//udpa/annotations:pkg",
+        "@com_github_cncf_udpa//xds/annotations/v3:pkg",
+    ],
+)

envoy/extensions/filters/http/connect_grpc_bridge/v3/config.proto

@@ -0,0 +1,22 @@
+syntax = "proto3";
+
+package envoy.extensions.filters.http.connect_grpc_bridge.v3;
+
+import "xds/annotations/v3/status.proto";
+
+import "udpa/annotations/status.proto";
+
+option java_package = "io.envoyproxy.envoy.extensions.filters.http.connect_grpc_bridge.v3";
+option java_outer_classname = "ConfigProto";
+option java_multiple_files = true;
+option go_package = "github.com/envoyproxy/go-control-plane/envoy/extensions/filters/http/connect_grpc_bridge/v3;connect_grpc_bridgev3";
+option (udpa.annotations.file_status).package_version_status = ACTIVE;
+option (xds.annotations.v3.file_status).work_in_progress = true;
+
+// [#protodoc-title: Buf Connect to gRPC] Buf Connect to gRPC bridge
+// :ref:`configuration overview <config_http_filters_connect_grpc_bridge>`.
+// [#extension: envoy.filters.http.connect_grpc_bridge]
+
+// Buf Connect gRPC bridge filter configuration
+message FilterConfig {
+}

versioning/BUILD

@@ -101,6 +101,7 @@ proto_library(
         "//envoy/extensions/filters/http/cdn_loop/v3:pkg",
         "//envoy/extensions/filters/http/composite/v3:pkg",
         "//envoy/extensions/filters/http/compressor/v3:pkg",
+        "//envoy/extensions/filters/http/connect_grpc_bridge/v3:pkg",
         "//envoy/extensions/filters/http/cors/v3:pkg",
         "//envoy/extensions/filters/http/csrf/v3:pkg",
         "//envoy/extensions/filters/http/custom_response/v3:pkg",