Add example project for karma

Author: gayanW

.github/workflows/karma.yaml

@@ -45,13 +45,13 @@ jobs:
         run: find test -name "*.spec.ts" -o -name "*.spec.js" > test_list.txt
       - name: Run all tests
         run: |
-          KARMA_FILES=$(cat test_list.txt | jq -R -s -c 'split("\n")[:-1]')
+          export KARMA_FILES=$(cat test_list.txt | jq -R -s -c 'split("\n")[:-1]')
           npx karma start --single-run
       - name: Record tests
         run: launchable record tests karma test-results.json
       - name: Request subset
         run: cat test_list.txt | launchable subset --target 25% karma  > subset.txt
       - name: Run subset of tests
         run: |
-          KARMA_FILES=$(cat subset.txt | jq -R -s -c 'split("\n")[:-1]')
+          export KARMA_FILES=$(cat subset.txt | jq -R -s -c 'split("\n")[:-1]')
           npx karma start --single-run