ci: adding mamba based pytest ci action

Signed-off-by: Kin Long Kelvin Lee <[email protected]>

.github/workflows/run_pytest_datasets.yml

@@ -0,0 +1,23 @@
+name: Run data related PyTests
+on:
+  pull_request:
+    paths:
+      - 'matsciml/datasets/**'
+      - 'matsciml/lightning/data_utils.py'
+jobs:
+  dataset-pytest:
+  runs-on: ubuntu-latest
+  steps:
+    - uses: actions/checkout@v3
+    - name: Create micromamba env
+      uses: mamba-org/setup-micromamba@v1
+      with:
+        micromamba-version: '1.5.7-0'
+        environment-file: conda.yml
+        init-shell: >-
+          bash
+        cache-environment: true
+        post-cleanup: 'all'
+    - name: Run pytest in data
+      run: |
+        pytest -v -m "not lmdb and not slow and not remote_request" ./matsciml/datasets ./matsciml/lightning/