chore: introduce unit testing

chore: introduce unit testing

* Draft test example.

For coverage on all of the attribute setters and the translation from
info dict to the attributes.

* comment about plans on senml parsing.

* linter fixes.

* Add tests for H35i and T10i.

* lint fixes.

* Update golden for H35i

* Add a pytest workflow.

* rename the workflow.

Apparently I cannot trigger it. I think it is also missing a pip install
-e .

* add installation step.

* Add a readme for the golden data generation.

.github/workflows/pytestPR.yaml

@@ -0,0 +1,30 @@
+name: "PyTest PR"
+
+on:
+  pull_request_target:
+    types:
+      - opened
+      - edited
+      - synchronize
+
+jobs:
+  main:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: ["3.13"]
+    steps:
+      - uses: actions/checkout@v3
+      - name: developer mode install
+        run: pip install -e .
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v4
+        with:
+          python-version: ${{ matrix.python-version }}
+      - name: Install pytest dependencies
+        run: pip install pytest pytest-md pytest-emoji
+      - uses: pavelzw/pytest-action@v2
+        with:
+          emoji: false
+          verbose: false
+          job-summary: true