Kafka codec: response encoder and decoder (#6993)

Signed-off-by: Adam Kotwasinski <adam.kotwasinski@gmail.com>

Mirrored from https://github.com/envoyproxy/envoy @ d63aa4d05c0968eb335a891c1b1218d2675beac7

bazel/repositories.bzl

@@ -314,4 +314,12 @@ filegroup(
     visibility = ["//visibility:public"],
 )
 
+filegroup(
+    name = "response_protocol_files",
+    srcs = glob([
+        "*Response.json",
+    ]),
+    visibility = ["//visibility:public"],
+)
+
 """