Prepare project for pytest & publishing to PyPi using GH actions

[SmartCodeMaker]

• Move source code to ./src/topologicpy

• Add ./src/topologicpy/version.py with the following content: __version__ = '0.6.0' Feel free to set a package version just there (builder will use it)

• Prepare tests for using with pytest (set proper naming for test files and def), remove sys.path.append("C:/Users/.../GitHub")

• Make test working via:

  pip install -e '.[test]'
  pytest

  Example:

  $ pytest
  ============================= test session starts =============================
  platform win32 -- Python 3.8.10, pytest-8.2.0, pluggy-1.5.0 -- c:\hostedtoolcache\windows\python\3.8.10\x64\python.exe
  cachedir: .pytest_cache
  rootdir: D:\a\topologicpy\topologicpy
  configfile: pyproject.toml
  testpaths: tests
  plugins: xdist-3.6.1
  created: 4/4 workers
  4 workers [14 items]
  scheduling tests via LoadScheduling
  tests/test_01Vertex.py::test_main
  tests/test_03Wire.py::test_main
  tests/test_07CellComplex.py::test_main
  tests/test_05Shell.py::test_main
  [gw1] [  7%] PASSED tests/test_03Wire.py::test_main
  tests/test_04Face.py::test_main
  [gw0] [ 14%] PASSED tests/test_01Vertex.py::test_main
  tests/test_02Edge.py::test_main
  [gw0] [ 21%] PASSED tests/test_02Edge.py::test_main
  tests/test_10Dictionary.py::test_main
  [gw0] [ 28%] PASSED tests/test_10Dictionary.py::test_main
  tests/test_11Grid.py::test_main
  [gw0] [ 35%] PASSED tests/test_11Grid.py::test_main
  tests/test_12Matrix.py::test_main
  [gw0] [ 42%] PASSED tests/test_12Matrix.py::test_main
  tests/test_13Graph.py::test_main
  [gw1] [ 50%] PASSED tests/test_04Face.py::test_main
  tests/test_09Topology.py::test_main
  [gw0] [ 57%] PASSED tests/test_13Graph.py::test_main
  tests/test_14Vector.py::test_main
  [gw0] [ 64%] PASSED tests/test_14Vector.py::test_main
  [gw2] [ 71%] PASSED tests/test_05Shell.py::test_main
  tests/test_06Cell.py::test_main
  [gw2] [ 78%] PASSED tests/test_06Cell.py::test_main
  [gw3] [ 85%] PASSED tests/test_07CellComplex.py::test_main
  tests/test_08Cluster.py::test_main
  [gw3] [ 92%] PASSED tests/test_08Cluster.py::test_main
  [gw1] [100%] PASSED tests/test_09Topology.py::test_main
  ======================= 14 passed in 275.04s (0:04:35) ======================

• Create GitHub Action to (i) build universal wheel with version taken from git tag, (ii) test the package on Linux, Windows, macOS with Python 3.8-3.12, (iii) publish package to PyPI (if git branch is main or prerelease), (iv) publish universal wheel on GitHub Release pages (if git branch is main).