[CI] Run workflow nightly, on workflow_dispatch and merge_group events trigger (#26)

Author: aobolensk

.github/workflows/main.yml

@@ -1,6 +1,12 @@
 name: Build application
 
-on: [push, pull_request]
+on:
+  push:
+  pull_request:
+  merge_group:
+  schedule:
+    - cron: '0 0 * * *'
+  workflow_dispatch:
 
 jobs:
   ubuntu-build: