feat: add clean slate for FTP workflow

Author: felixindrawan

.github/workflows/main.yml

@@ -4,6 +4,12 @@ name: CI
 on:
   # Allows you to run this workflow manually from the Actions tab
   workflow_dispatch:
+    inputs:
+      clean_slate:
+        description: 'Clean remote directory before upload'
+        required: false
+        default: false
+        type: boolean
 
 # A workflow run is made up of one or more jobs that can run sequentially or in parallel
 jobs:
@@ -44,4 +50,5 @@ jobs:
           password: ${{ secrets.FTP_DEMO_PASSWORD }}
           port: 21 
           local-dir: /home/ubuntu/mrz-scanner-javascript/deploy/
-          server-dir: /Demo.dynamsoft.com/mrz-scanner/
+          server-dir: /Demo.dynamsoft.com/mrz-scanner/
+          dangerous-clean-slate: ${{ github.event.inputs.clean_slate }}