add_new_issues.yml

name: Add new issues to project board

on:
  issues:
    types: [opened]

env:
  GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

jobs:
  add-new-issues:
    runs-on: ubuntu-latest
    steps:
      - uses: srggrs/assign-one-project-github-action@1.2.1
        with:
          project: 'https://github.com/${{ github.repository }}/projects/1'

Monday.com provides in Integration that creates a Github Issue associated with a Monday Item. If you want new issues added to a project board, you can use this workflow to do that. Make sure to update the project URL with your actual org/repo.

You will also want to use Github's built-in automation to assign newly added items to a column.