added E2E testing job

.github/workflows/main.yml

@@ -2,11 +2,12 @@ name: CI/CD
 on:
 - push
 jobs:
+    # FIRST JOB => check if code is valid
     code-checks:
         name: Code Checks
         runs-on:ubuntu-latest
         steps:
-            - uses: actions/checkout@v4 # IMPORTANT TO NOTE! this action allows the job to access the repository
+            - uses: actions/checkout@v4 # IMPORTANT TO NOTE! this action allows the job to access/check out the repository under $GITHUB_WORKSPACE (https://github.com/marketplace/actions/checkout)
             - uses: actions/setup-node@v4
             with:
                 node-version: 18
@@ -15,4 +16,16 @@ jobs:
             - run: npm run test
             - run: npm run lint
             - run: npm run format:check
-            - run: npm run types:check
+            - run: npm run types:check
+    # SECOND JOB => run e2e tests
+    # it will build the app, start it and run all e2e tests
+    e2e:
+        name: E2E Tests
+        runs-on:ubuntu-latest
+        steps: 
+            - uses: actions/checkout@v4
+            - uses: cypress-io/github-action@v6 # this action install dependencies and caches them for future use, then run cypress e2e tests on election browser and gives us test summary after completion (https://github.com/marketplace/actions/cypress-io)
+            with:
+                build: npm run build
+                start: npm run start
+