Added workflow to uploading release to PyPI

.github/workflows/release.yml

@@ -0,0 +1,66 @@
+name: Build and upload to PyPI
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.number }}-${{ github.event.ref }}
+  cancel-in-progress: true
+
+# (Temporary) To test this, trigger on pull request
+on: [push, pull_request]
+
+#on:
+#  release:
+#    types:
+#      - published
+
+jobs:
+
+  build_sdist:
+    name: Build source distribution
+    runs-on: ubuntu-latest
+    outputs:
+      SDIST_NAME: ${{ steps.sdist.outputs.SDIST_NAME }}
+
+      steps:
+        - uses: actions/checkout@v4
+          with:
+            # We need the full history to generate the proper version number
+            fetch-depth: 0
+
+        - uses: actions/setup-python@v4
+          name: Install Python
+          with:
+            python-version: '3.11'
+
+        - name: Install dependencies
+          run: python -m pip install build twine
+
+        - name: Build sdist
+          id: sdist
+          run: |
+            python -m build --sdist
+            # Get the name of the build sdist file for later use
+            echo "SDIST_NAME=$(ls -1 dist)" >> $GITHUB_OUTPUT
+
+        - name: Check README rendering for PyPI
+          run: twine check dist/*
+
+        - name: Upload sdist result
+          uses: actions/upload-artifact@v3
+          with:
+            name: sdist
+            path: dist/*.tar.gz
+            if-no-files-found: error
+
+  pypi-publish:
+    name: Upload release to PyPI
+    runs-on: ubuntu-latest
+    environment:
+      name: pypi
+      url: https://pypi.org/p/imap_processing
+    permissions:
+      id-token: write  # IMPORTANT: this permission is mandatory for trusted publishing
+    steps:
+    # retrieve your distributions here
+
+    - name: Publish package distributions to PyPI
+      uses: pypa/[email protected]