chore: add sourcery workflow to CI checks (#646)

.github/workflows/sourcery.yml

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+name: Check PR using Sourcery
+
+on: pull_request
+
+jobs:
+  review-with-sourcery:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+
+      - uses: actions/setup-python@v4
+        with:
+          python-version: 3.11
+
+      - uses: sourcery-ai/action@v1
+        with:
+          token: ${{ secrets.SOURCERY_TOKEN }}
+          diff_ref: ${{ github.event.pull_request.base.sha }}

.sourcery.yaml

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+# Sourcery configuration file.
+# 📚 For a complete reference to this file, see the documentation at
+# https://docs.sourcery.ai/Configuration/Project-Settings/
+
+
+version: '1'  
+
+ignore:
+  - src/dsp_tools/commands/project/models
+  - src/dsp_tools/commands/xmlupload/models
+  - src/dsp_tools/models
+
+rule_settings:
+  enable:
+    - default
+  disable: [
+    inline-immediately-returned-variable,
+    max-min-default,
+  ]
+  rule_types:
+    - refactoring
+    - suggestion
+    - comment
+  python_version: '3.11'