build: make sure resources are built for 'make mypy'

Makefile

@@ -17,6 +17,7 @@ pystyle_check: ## run code style check on application sources and tests
 	flake8 --version
 	isort --version | awk '/VERSION/{print $$2}'
 	black --version
+	mypy --version
 	@echo [MYPY]
 	@make -C core mypy
 	@echo [FLAKE8]

core/Makefile

@@ -101,7 +101,7 @@ test_emu_ui_record: ## record and hash screens for ui integration tests
 pylint: ## run pylint on application sources and tests
 	pylint -E $(shell find src tests -name *.py)
 
-mypy:
+mypy: res
 	mypy --config-file ../setup.cfg \
 		src/main.py