Initial commit from pymetrius template

.github/workflows/common_steps.yml

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+
+# Common step definitions to be included by other workflows
+# This way we can centralize the package manager-specific steps
+
+# Poetry setup steps
+poetry-setup:
+  - name: Install poetry
+    uses: abatilo/actions-poetry@v2
+  - name: Setup a local virtual environment (if no poetry.toml file)
+    run: |
+      poetry config virtualenvs.create true --local
+      poetry config virtualenvs.in-project true --local
+  - uses: actions/cache@v3
+    name: Define a cache for the virtual environment based on the dependencies lock file
+    with:
+      path: ./.venv
+      key: venv-${{ hashFiles('poetry.lock') }}
+  - name: Install the project dependencies
+    run: |
+      poetry install --with dev
+
+# UV setup steps
+uv-setup:
+  - name: Install uv
+    run: pip install uv
+  - uses: actions/cache@v3
+    name: Cache dependencies
+    with:
+      path: ~/.cache/uv
+      key: uv-${{ hashFiles('pyproject.toml') }}
+  - name: Install dependencies
+    run: |
+      uv venv
+      uv pip install -e ".[dev]"
+
+# Pixi setup steps
+pixi-setup:
+  - name: Install pixi
+    uses: prefix-dev/setup-pixi@v0.4.1
+    with:
+      pixi-version: v0.7.0
+  - name: Install dependencies
+    run: pixi install
+