feat: add support for unzip argument in downloadArtifact

[shiipou]

This PR just add the possibility to filter what we want to unzip or not when downloading artifacts.

This feature was asked by so many people. I choose to focus on simplicity on this implementation and change almost nothing in the code, so it won't break any part of the existing toolkit.

Here a simple example that show how it work : https://github.com/shiipou/download-artifact/blob/main/.github/workflows/test.yml

You can also try it with this workflow :

Workflow

name: Loop Over Artifact IDs

on: [push]

permissions:
  contents: write
  actions: write
  packages: write

jobs:
  create-artifacts:
    runs-on: ubuntu-latest
    steps:
      - name: Create and upload artifacts
        run: |
          mkdir -p artifact1 artifact2
          echo "Content1" > artifact1/file.txt
          echo "Content2.1" > artifact2/file1.txt
          echo "Content2.2" > artifact2/file2.txt
          echo "Content2.3" > artifact2/file3.txt
      - id: artifact-1
        name: Upload artifact 1
        uses: actions/upload-artifact@v4
        with:
          name: artifact1
          path: artifact1/*
      - id: artifact-2
        name: Upload artifact 2
        uses: actions/upload-artifact@v4
        with:
          name: artifact2
          path: artifact2/*
    outputs:
      artifact-1-id: ${{ steps.artifact-1.outputs.artifact-id }}
      artifact-2-id: ${{ steps.artifact-2.outputs.artifact-id }}

  process-artifacts:
    needs: create-artifacts
    runs-on: ubuntu-latest
    steps:
      - id: download-artifacts
        name: Download artifacts
        uses: shiipou/download-artifact@main
        with:
          artifact-ids: ${{ needs.create-artifacts.outputs.artifact-1-id }},${{ needs.create-artifacts.outputs.artifact-2-id }}
          path: artifacts/
          unzip: ${{ needs.create-artifacts.outputs.artifact-1-id }}
      - name: print artifacts
        run: ls -pAR artifacts/
      - name: unzip artifacts
        run: unzip artifacts/**/*.zip