.github/workflows: Add Action to run unit tests

- Runs on PRs and on push to main branch
- Badge on README displaying results

Author: fordN

.github/workflows/unit-tests.yml

@@ -0,0 +1,54 @@
+name: Unit Tests
+
+on:
+  push:
+    branches: [ main ]
+    paths:
+      - 'src/**/*.py'
+      - 'tests/**/*.py'
+      - 'pyproject.toml'
+      - '.github/workflows/unit-tests.yml'
+  pull_request:
+    branches: [ main ]
+    paths:
+      - 'src/**/*.py'
+      - 'tests/**/*.py'
+      - 'pyproject.toml'
+      - '.github/workflows/unit-tests.yml'
+
+jobs:
+  unit-tests:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: ['3.12']
+    
+    steps:
+    - uses: actions/checkout@v4
+    
+    - name: Install uv
+      uses: astral-sh/setup-uv@v4
+    
+    - name: Set up Python ${{ matrix.python-version }}
+      run: uv python install ${{ matrix.python-version }}
+    
+    - name: Install dependencies
+      run: |
+        uv sync --all-groups
+    
+    - name: Run unit tests
+      run: |
+        uv run pytest tests/unit/ -m "unit" -v --tb=short
+    
+    - name: Run unit tests with coverage
+      run: |
+        uv run pytest tests/unit/ -m "unit" --cov=src/amp --cov-report=xml --cov-report=term-missing
+    
+    - name: Upload coverage reports
+      uses: codecov/codecov-action@v4
+      if: always()
+      with:
+        file: ./coverage.xml
+        flags: unittests
+        name: codecov-umbrella
+        fail_ci_if_error: false

README.md

@@ -1,5 +1,11 @@
 # Python Amp Client
 
+[![Unit tests status](https://github.com/edgeandnode/amp-python/actions/workflows/unit-tests.yml/badge.svg?event=push)](https://github.com/edgeandnode/amp-python/actions/workflows/unit-tests.yml)
+[![Formatting status](https://github.com/edgeandnode/amp-python/actions/workflows/ruff.yml/badge.svg?event=push)](https://github.com/edgeandnode/amp-python/actions/workflows/ruff.yml)
+
+
+## Overview 
+
 Client for issuing queries to an Amp server and working with the returned data.
 
 ## Installation