Add 'check all checks' check so we can make it required (#30)

Signed-off-by: Phil Dibowitz <phil@ipom.com>

Author: jaymzh

.github/workflows/check-all-checks.yml

@@ -0,0 +1,12 @@
+name: All checks pass
+on:
+  pull_request:
+
+jobs:
+  allchecks:
+    runs-on: ubuntu-latest
+    permissions:
+      checks: read
+      contents: read
+    steps:
+      - uses: wechuli/allcheckspassed@v1