Add testing artefacts to github actions

[allynt]

Something like this:

name: build
run-name: build (invoked by ${{ github.actor }})

on: [push, workflow_dispatch]

jobs:
  server-tests:
    runs-on: ubuntu-20.04
    timeout-minutes: 15
    continue-on-error: true
    services:
      db:
        image: kartoza/postgis:15
        env:
          POSTGRES_USER: user
          POSTGRES_PASS: pwd
          POSTGRES_DBNAME: db
          ALLOW_IP_RANGE: 0.0.0.0/0
        ports:
          - 5666:5432
    steps:
      - name: Checkout repository
        uses: actions/checkout@v3
      - name: setup Python and PDM
        uses: pdm-project/setup-pdm@v3
        with:
          python-version: 3.10.0
          enable-pep582: true
      - name: Install dependencies
        run: |
          sudo apt-get update
          sudo apt-get install -y postgresql-client python3-gdal
          pdm install --dev
      - name: Run server tests
        env:
          DJANGO_ENVIRONMENT: "ci"
          DJANGO_SETTINGS_MODULE: "config.settings"
          DATABASE_URL: "postgis://user:pwd@localhost:5666/db"
        run: |
          pdm run ./manage.py migrate --noinput
          pdm run test
      - name: Upload server test report
        uses: actions/upload-artifact@v3
        with:
          name: pytest-report
          path: |
            server/pytest-report.html
            server/output.json
            server/archive/*