fix up mypy.ini, and properly ignore grpc and extension

mypy.ini

@@ -1,7 +1,8 @@
 [mypy]
 ignore_missing_imports = True
-exclude = lnbits/wallets/lnd_grpc_files/
-exclude = lnbits/extensions/
-
+exclude = (?x)(
+    ^lnbits/extensions.
+    | ^lnbits/wallets/lnd_grpc_files.
+  )
 [mypy-lnbits.wallets.lnd_grpc_files.*]
 follow_imports = skip

requirements.txt

@@ -43,9 +43,10 @@ sqlalchemy==1.3.23
 sqlalchemy-aio==0.16.0
 sse-starlette==0.6.2
 starlette==0.14.2
+types-protobuf==3.19.22
 typing-extensions==3.10.0.2
 uvicorn==0.15.0
 uvloop==0.16.0
 watchgod==0.7
 websockets==10.0
-zipp==3.5.0
+zipp==3.5.0