Create alert.workflow

Author: y-mehta

.github/alert.workflow

@@ -0,0 +1,19 @@
+name: VulnAlerts
+
+on: 
+  schedule:
+    - cron:  '*/1 * * * *'
+
+jobs:
+  alert:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@master
+    - name: install dependencies
+      run: pip3 install -r requirements.txt
+    - name: run python script
+      env:
+        SLACK_WEBHOOK: ${{ secrets.SLACK_WEBHOOK }}
+      run: python3 main.py
+    - name: done
+      run: echo 'done'