Add contextual card proto libraries.

Test: rebuild
Change-Id: Ifd105a91be4ce3b3ae35766e069d4b4663e54b0f
diff --git a/protos/Android.bp b/protos/Android.bp
new file mode 100644
index 0000000..533dbca
--- /dev/null
+++ b/protos/Android.bp
@@ -0,0 +1,8 @@
+java_library_static {
+    name: "settings-contextual-card-protos-lite",
+    host_supported: true,
+    proto: {
+        type: "lite",
+    },
+    srcs: ["contextual_card_list.proto"],
+}
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