MAINT add linter check

.github/workflows/lint.yml

@@ -0,0 +1,17 @@
+name: Unit Tests
+
+on: [push]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: prefix-dev/[email protected]
+        with:
+          pixi-version: v0.20.1
+          environments: lint
+          frozen: true
+
+      - name: Run linter
+        run: pixi run lint

.pre-commit-config.yaml

@@ -0,0 +1,16 @@
+repos:
+-   repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: v4.3.0
+    hooks:
+    -   id: check-yaml
+    -   id: end-of-file-fixer
+    -   id: trailing-whitespace
+-   repo: https://github.com/psf/black
+    rev: 23.3.0
+    hooks:
+    -   id: black
+-   repo: https://github.com/astral-sh/ruff-pre-commit
+    rev: v0.0.272
+    hooks:
+    -   id: ruff
+        args: ["--fix", "--show-source"]