Improve scripts

bin/update_core.sh

@@ -10,8 +10,4 @@ git fetch origin main || exit 1
 git reset origin/main --hard
 popd
 
-rm -rf app/build/extracted-include-protos \
-    library/proto/build \
-    library/proto-stub/build
-
-git add .
+git add .

bin/update_pb.sh

@@ -0,0 +1,5 @@
+#!/bin/bash
+
+rm -rf app/build/extracted-include-protos \
+  library/proto/build \
+  library/proto-stub/build