Add non-blocking CI testing capability (#1)

Add CI capability to GitHub.

This PR adds non-blocking CI checks that run automatically on Pull Request opens, Pull Request synchronizes (commits to an open PR), and commits to the "main" branch.

Currently, there is 1 test configuration: python 3.9.

.github/workflows/ci-test.yml

@@ -0,0 +1,33 @@
+name: Fugu integration tests
+
+on:
+  pull_request:
+    types:
+      - opened
+      - synchronize
+    branches:
+      - main
+  push:
+    branches:
+      - main
+  workflow_dispatch:
+
+jobs:
+  python39:
+    defaults:
+      run:
+        shell: bash -l {0}
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v4
+    - name: Set up Python 3.9
+      uses: actions/setup-python@v3
+      with:
+        python-version: '3.9'
+    - name: install deps
+      run: |
+        pip install -e .
+    - name: Run tests with pytest
+      run: |
+        pytest

fugu_conda_environment.yml

@@ -25,5 +25,4 @@ dependencies:
   - coverage
   - isort
   - black
-  - pip
-
+  - pip