Unify two largely duplicate test workflows into one and add macos into the matrix of OSes

- Duplication is evil
- I do not see a reason to not support specific per OS versions of Python
  but if needed, could always be done via "exclude"
- requirements.txt file seems to be always there so unclear why to check
- If works on Mac, Closes #30

Author: yarikoptic

.github/workflows/linux.yaml .github/workflows/tests.yaml.github/workflows/linux.yaml renamed to .github/workflows/tests.yaml

@@ -1,4 +1,5 @@
-name: linux-tests
+name: tests
+
 
 on: [push, pull_request]
 
@@ -8,12 +9,9 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ubuntu-latest]
-        # Python 3.3 and 3.4 have been removed since github won't provide these anymore
-        # As of 2023/01/09, we have removed python 3.5 and 3.6 as they don't work anymore with linux on github
-        # As of 2023/08/30, we have removed python 2.7 since github actions won't provide it anymore
-        # As of 2025/01/20, we have removed python 3.7 since github actions won't povide it anymore
-        python-version: [3.8, 3.9, "3.10", "3.11", "3.12", "3.13", 'pypy-3.6', 'pypy-3.7', 'pypy-3.8', 'pypy-3.10']
+        # Remember kids, the default shell on Windows is Powershell
+        os: [linux-latest, macos-latest, windows-latest]
+        python-version: [3.8, 3.9, "3.10", "3.11", "3.12", "3.13", "pypy-3.6", "pypy-3.7", "pypy-3.8", "pypy-3.10"]
 
     steps:
     - uses: actions/checkout@v3
@@ -25,7 +23,7 @@ jobs:
       run: |
         python -m pip install --upgrade pip
         python -m pip install --upgrade setuptools
-        if [ -f command_runner/requirements.txt ]; then pip install -r command_runner/requirements.txt; fi
+        pip install -r command_runner/requirements.txt
     - name: Generate Report
       env:
         RUNNING_ON_GITHUB_ACTIONS: true