minor #261 Use CI config files from the remote centralized spot (bocharsky-bw)

This PR was squashed before being merged into the main branch.

Discussion
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Use CI config files from the remote centralized spot

https://github.com/orgs/SymfonyCasts/projects/7/views/1?sortedBy%5Bdirection%5D=asc&sortedBy%5BcolumnId%5D=33394902&pane=issue&itemId=21066810

Commits
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19c8711 Use CI config files from the remote centralized spot

Author: weaverryan

.github/workflows/ci.yaml

@@ -0,0 +1,21 @@
+name: CI
+
+on:
+    pull_request: ~
+    push:
+        branches: ['main']
+    schedule:
+        - cron: '0 */12 * * *'
+
+jobs:
+    test:
+        uses: SymfonyCasts/.github/.github/workflows/phpunit.yaml@main
+
+    composer-validate:
+        uses: SymfonyCasts/.github/.github/workflows/composer-validate.yaml@main
+
+    cs:
+        uses: SymfonyCasts/.github/.github/workflows/php-cs-fixer.yaml@main
+
+    sca:
+        uses: SymfonyCasts/.github/.github/workflows/psalm.yaml@main