Add GHA workflow to mark and close inactive PRs and Issues

name: Close inactive issues and PRs

on:

  workflow_dispatch:

  schedule:

    - cron: "30 1 * * *"

jobs:

  close-stale:

    runs-on: ubuntu-latest

    permissions:

      issues: write

      pull-requests: write

    steps:

      - uses: actions/stale@v3

        with:

          days-before-stale: 30

          days-before-close: 14

          stale-issue-label: "stale"

          stale-pr-label: "stale"

          exempt-issue-labels: backlog,triage,nostale

          exempt-pr-labels: backlog,triage,nostale

          stale-pr-message: "This PR is stale because it has been open for 30 days with no activity."

          close-pr-message: "This PR was closed because it has been inactive for 14 days since being marked as stale."

          stale-issue-message: "This issue is stale because it has been open for 30 days with no activity."

          close-issue-message: "This issue was closed because it has been inactive for 14 days since being marked as stale."

          repo-token: ${{ secrets.GITHUB_TOKEN }}