Add passed lable when CI passes

[dogmatic69]

here

name: Triage
on:
  issues:
    types: [opened]
jobs:
  applyTriageLabel:
    name: Apply Triage Label
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@master
      - name: Apply Triage Label
        uses: actions/github@v1.0.0
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          args: label triage