Add exception handler, route error messages to log window also #274

	name: Linux Unit Tests
	on: [push]

	jobs:
	build:
	name: unit-tests
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3
	with:
	submodules: 'true'

	- name: install tools
	run: \|
	sudo apt install cmake
	sudo apt install lcov

	- name: build & run tests
	run: \|
	cd ..
	git clone https://github.com/catchorg/Catch2.git
	cd Cuneiform/tests
	cmake ./
	make -j4
	cd bin
	./i18nTestRunner --reporter JUnit::out=i18n-junit.xml
	cat i18n-junit.xml
	errors=$(cat i18n-junit.xml \| grep -Po '(errors)="\K[^"]*')
	failures=$(cat i18n-junit.xml \| grep -Po '(failures)="\K[^"]*')
	if [ "$errors" -gt 0 ]; then
	echo "Error count is: ${errors}"
	exit 1
	fi
	if [ "$failures" -gt 0 ]; then
	echo "Failure count is: ${failures}"
	exit 1
	fi

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