enable manual actions run using the workflow_dispatch

.github/workflows/api.yaml

@@ -1,6 +1,8 @@
 name: API
 
 on:
+  workflow_dispatch:
+
   push:
     branches:
       - master

.github/workflows/scanners.yaml

@@ -1,6 +1,8 @@
 name: Scanners
 
 on:
+  workflow_dispatch:
+
   schedule:
     - cron: "0 0 * * 1"
       

.github/workflows/ui.yaml

@@ -1,6 +1,8 @@
 name: UI
 
 on:
+  workflow_dispatch:
+    
   push:
     branches:
       - master