feat: wait-iteration to control the timeout for the destination pull request

on a busy repository or with a long workflow, it may take more than
the one hour default to complete

action.yml

@@ -101,6 +101,10 @@ inputs:
   update:
     description: 'path to the script to update the content of the cascading PR'
     required: true
+  wait-iteration:
+    description: 'number of seconds to wait before verifying for the status of the destination pull request (timeout after 100 iterations)'
+    default: 36
+    required: true
   prefix:
     description: 'prefix of the branch from which the cascading PR is created on {destination-repo} or {destination-fork-repo} (default to {origin-repo})'
   close:
@@ -143,6 +147,7 @@ runs:
                         --destination-token "@$destination_token" \
                         --destination-branch "${{ inputs.destination-branch }}" \
                         --update "${{ inputs.update }}" \
+                        --wait-iteration "${{ inputs.wait-iteration }}" \
                         --prefix "${{ inputs.prefix }}" \
                         --close "${{ inputs.close }}" \
                         run