pyproject.toml: fix missing package i wheel (#105)

* pyproject.toml: fix missing package i wheel

The wheel was missing package due to it not being packaged. The
hatchling documentation specifies that packages should be set this way.

The testing of this change in virtual environment:

  nobody@host:pytest-tap$ python3 -m venv env                                                                                                         wheelfix+
  nobody@host:pytest-tap$ . ./env/bin/activate                                                                                                        wheelfix+
  ((env) ) nobody@host:pytest-tap$ pip install .                                                                                                      wheelfix+
  Processing /home/cynerd/src/pytest-tap
    Installing build dependencies ... done
    Getting requirements to build wheel ... done
    Preparing metadata (pyproject.toml) ... done
  Requirement already satisfied: pytest>=3.0 in /nix/store/094gpcj7d1z8wdvymhxvi2rns757vb2p-python3.12-pytest-8.3.5/lib/python3.12/site-packages (from pytest-tap==3.5) (8.3.5)
  Requirement already satisfied: tap-py<4.0,>=3.2 in /nix/store/bmvj5dimxkphyrzwl0jyvi6blz8imqpn-python3.12-tap.py-3.2.1/lib/python3.12/site-packages (from pytest-tap==3.5) (3.2.1)
  Requirement already satisfied: iniconfig in /nix/store/8bcr5c5m8d1359k52mwjdbqjw2rzwdgq-python3.12-iniconfig-2.1.0/lib/python3.12/site-packages (from pytest>=3.0->pytest-tap==3.5) (2.1.0)
  Requirement already satisfied: packaging in /nix/store/wr2lp9ziysxbjbf5ww09a4k7ivvnxbc4-python3.12-packaging-24.2/lib/python3.12/site-packages (from pytest>=3.0->pytest-tap==3.5) (24.2)
  Requirement already satisfied: pluggy<2,>=1.5 in /nix/store/fbbyfni2ccjw8r7rh7ww3x8ky1yk4hi7-python3.12-pluggy-1.5.0/lib/python3.12/site-packages (from pytest>=3.0->pytest-tap==3.5) (1.5.0)
  Building wheels for collected packages: pytest-tap
    Building wheel for pytest-tap (pyproject.toml) ... done
    Created wheel for pytest-tap: filename=pytest_tap-3.5-py3-none-any.whl size=6543 sha256=6733459ec7272402507031361355d4820fd799659e4102568790d9e53b2863c0
    Stored in directory: /home/cynerd/.cache/pip/wheels/e4/ea/6f/0c79e4850b81f185670c0a561a2ebc457c7a0b4ee105c88476
  Successfully built pytest-tap
  Installing collected packages: pytest-tap
  Successfully installed pytest-tap-3.5

  [notice] A new release of pip is available: 25.0.1 -> 25.1.1
  [notice] To update, run: pip install --upgrade pip
  ((env) ) nobody@host:pytest-tap$ ls env/lib/python3.12/site-packages/pytest_tap/                                                                    wheelfix+
  __init__.py  plugin.py

The listed directory wasn't present before this change.

* Remove sources entry from pyproject.toml

This applies a similar fix to python-tap/tappy#166

---------

Co-authored-by: Matt Layman <matthewlayman@gmail.com>

Author: Cynerd

AUTHORS

@@ -9,6 +9,7 @@ Contributors
 * Erik Cederstrand
 * Frédéric Mangano-Tarumi
 * Greg Sadetsky
+* Karel Kočí
 * Matt Layman
 * Måns Ansgariusson - ARM Sweden
 * meejah (https://meejah.ca)

pyproject.toml

@@ -47,11 +47,9 @@ include = [
     "/docs",
     "/tests",
 ]
-sources = ["src"]
 
 [tool.hatch.build.targets.wheel]
-sources = ["src"]
-packages = ["pytest_tap"]
+packages = ["src/pytest_tap"]
 
 [tool.pytest.ini_options]
 pythonpath = [".", "src"]