Add ShpReader and ShxReader #197

Job	Run time
mypy-strict	9s
build_wheel_and_sdist	17s
pre-commit	14s
test_on_all_platforms (3.9, macos-latest)	47s
test_on_all_platforms (3.9, ubuntu-24.04)	36s
test_on_all_platforms (3.10, macos-latest)	46s
test_on_all_platforms (3.10, ubuntu-24.04)	31s
test_on_all_platforms (3.9, windows-latest)	1m 26s
test_on_all_platforms (3.10, windows-latest)	1m 1s
test_on_all_platforms (3.11, macos-latest)	30s
test_on_all_platforms (3.14, ubuntu-24.04)	33s
test_on_all_platforms (3.11, ubuntu-24.04)	33s
test_on_all_platforms (3.13, macos-latest)	28s
test_on_all_platforms (3.13, windows-latest)	59s
test_on_all_platforms (3.12, macos-latest)	32s
test_on_all_platforms (3.12, windows-latest)	55s
test_on_all_platforms (3.12, ubuntu-24.04)	34s
test_on_all_platforms (3.14, windows-latest)	55s
test_on_all_platforms (3.13, ubuntu-24.04)	38s
test_on_all_platforms (3.11, windows-latest)	1m 6s
test_on_all_platforms (3.14, macos-latest)	34s
test_on_all_platforms (3.15-dev, windows-latest)	1m 38s
test_on_all_platforms (3.15-dev, ubuntu-24.04)	46s
test_on_all_platforms (3.15-dev, macos-latest)	55s
	17m 23s

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