FIX wheel including wrong files using pixi build-wheel

Author: MatthewSZhang

tests/__init__.py renamed to fastcan/tests/__init__.py

@@ -11,6 +11,10 @@ project(
 
 py = import('python').find_installation(pure: false)
 
-install_subdir('fastcan', install_dir: py.get_install_dir())
+install_subdir(
+  'fastcan',
+  install_dir: py.get_install_dir(),
+  install_tag: 'python-runtime',
+)
 
 subdir('fastcan')

tests/test_beam.py renamed to fastcan/tests/test_beam.py

@@ -101,7 +101,7 @@ test = "pytest"
 test-coverage = { cmd = "rm -rf .coverage && pytest --cov-report {{ FMT }} --cov={{ PACKAGE }}", args = [{ arg = "FMT", default = "html" }, { arg = "PACKAGE", default = "fastcan" }] }
 
 [feature.build.tasks]
-build-wheel = "rm -rf dist && python -m build -wnx -Cinstall-args=--tags=runtime,python-runtime,devel"
+build-wheel = "rm -rf dist && python -m build -wnx"
 build-sdist = "rm -rf dist && python -m build --sdist"
 rebuild = "rm -rf build && pip install --no-deps --force-reinstall -e ."