Web UI frontend automated browser tests (#2223)

* First pass at basic browser tests for #1926

* Run tests against dev web server not go server

* Bundle the web code into the server before running tests

* Move cypress UI tests into its own npm project + add tests

* Add additional tests + wire up with cypress dashboard

* Limit concurrency of workflow jobs

* Temporarily comment out some tests that do not pass in mobile. Will fix later.

.github/workflows/hls-tests.yml

@@ -18,6 +18,11 @@ env:
 jobs:
   api:
     runs-on: ubuntu-latest
+
+    concurrency:
+      group: ${{ github.workflow }}-${{ github.ref }}
+      cancel-in-progress: true
+
     steps:
       - uses: actions/checkout@v3
       - uses: actions/setup-go@v3