Move to GH Actions

Author: BoGuu

.github/workflows/validate.yml

@@ -0,0 +1,21 @@
+name: Validation
+
+on:
+  push:
+    branches: [ master, v5.X.X ]
+  pull_request:
+    branches: [ master, v5.X.X ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    - uses: actions/setup-python@v1
+      with:
+        python-version: '3.4'
+    - name: Validate SQF
+      run: python ./tools/sqf_validator.py
+    - name: Validate Configs
+      run: python ./tools/config_style_checker.py