Migrate from setup.py to pyproject.toml format

- Add pyproject.toml with hatchling build backend
- Add ruff and pyright dev dependencies
- Configure ruff with line-length=100, target py38
- Configure pyright with basic type checking
- Target Python 3.8+

Author: ctoth

pyproject.toml

@@ -0,0 +1,72 @@
+[build-system]
+requires = ["hatchling"]
+build-backend = "hatchling.build"
+
+[project]
+name = "libloader"
+version = "1.3.3"
+authors = [
+    {name = "Christopher Toth", email = "q@q-continuum.net"},
+]
+description = "Quickly and easily load shared libraries on various platforms. Also includes a libloader.com module for loading com modules on Windows."
+readme = "README.md"
+license = {file = "LICENSE"}
+requires-python = ">=3.8"
+classifiers = [
+    "Development Status :: 3 - Alpha",
+    "Intended Audience :: Developers",
+    "Programming Language :: Python :: 3",
+    "Programming Language :: Python :: 3.8",
+    "Programming Language :: Python :: 3.9",
+    "Programming Language :: Python :: 3.10",
+    "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
+    "Programming Language :: Python :: 3.13",
+    "License :: OSI Approved :: MIT License",
+    "Topic :: Software Development :: Libraries",
+    "Operating System :: OS Independent",
+]
+dependencies = [
+    "pywin32; sys_platform == 'win32'",
+]
+
+[dependency-groups]
+dev = [
+    "ruff>=0.8.0",
+    "pyright>=1.1.0",
+]
+
+[tool.ruff]
+line-length = 100
+target-version = "py38"
+
+[tool.ruff.lint]
+select = [
+    "E",   # pycodestyle errors
+    "W",   # pycodestyle warnings
+    "F",   # pyflakes
+    "I",   # isort
+    "UP",  # pyupgrade
+    "B",   # flake8-bugbear
+]
+ignore = []
+
+[tool.pyright]
+pythonVersion = "3.8"
+typeCheckingMode = "basic"
+reportUnusedImport = "warning"
+reportUnusedVariable = "warning"
+reportDuplicateImport = "error"
+reportMissingTypeStubs = false
+reportMissingImports = "error"
+reportUnknownMemberType = false
+reportUnknownArgumentType = false
+reportUnknownVariableType = false
+reportPrivateUsage = "warning"
+reportConstantRedefinition = "error"
+exclude = [
+    "**/__pycache__",
+    "**/.git",
+    "**/build",
+    "**/dist",
+]