Add proxy layer to auth and sign and get initial data apis

PiperOrigin-RevId: 575867816

build/source_list.bzl

diff --git a/build/source_list.bzl b/build/source_list.bzl
index 3fae501..a766578 100644
--- a/build/source_list.bzl
+++ b/build/source_list.bzl
@@ -1605,6 +1605,7 @@
     "blind_sign_auth/proto/blind_sign_auth_options.proto",
     "blind_sign_auth/proto/get_initial_data.proto",
     "blind_sign_auth/proto/key_services.proto",
+    "blind_sign_auth/proto/proxy_layer.proto",
     "blind_sign_auth/proto/public_metadata.proto",
     "blind_sign_auth/proto/spend_token_data.proto",
 ]

build/source_list.gni

diff --git a/build/source_list.gni b/build/source_list.gni
index 833203c..02e1e64 100644
--- a/build/source_list.gni
+++ b/build/source_list.gni
@@ -1610,6 +1610,7 @@
     "src/quiche/blind_sign_auth/proto/blind_sign_auth_options.proto",
     "src/quiche/blind_sign_auth/proto/get_initial_data.proto",
     "src/quiche/blind_sign_auth/proto/key_services.proto",
+    "src/quiche/blind_sign_auth/proto/proxy_layer.proto",
     "src/quiche/blind_sign_auth/proto/public_metadata.proto",
     "src/quiche/blind_sign_auth/proto/spend_token_data.proto",
 ]

build/source_list.json

diff --git a/build/source_list.json b/build/source_list.json
index 768b0b6..e90f14c 100644
--- a/build/source_list.json
+++ b/build/source_list.json
@@ -1609,6 +1609,7 @@
     "quiche/blind_sign_auth/proto/blind_sign_auth_options.proto",
     "quiche/blind_sign_auth/proto/get_initial_data.proto",
     "quiche/blind_sign_auth/proto/key_services.proto",
+    "quiche/blind_sign_auth/proto/proxy_layer.proto",
     "quiche/blind_sign_auth/proto/public_metadata.proto",
     "quiche/blind_sign_auth/proto/spend_token_data.proto"
   ],