Replace setup.py with pyproject.toml

pyproject.toml

@@ -0,0 +1,56 @@
+[build-system]
+requires = ["setuptools", "wheel"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "pidng"
+version = "4.0.9"
+description = "Python utility for creating Adobe DNG files from RAW image data."
+readme = { file = "README.md", content-type = "text/markdown" }
+license = "MIT"
+authors = [
+    {name = "Csaba Nagy"}
+]
+requires-python = ">=3.6"
+dependencies = [
+    "numpy",
+]
+classifiers = [
+    "Development Status :: 4 - Beta",
+    "Topic :: Multimedia :: Graphics :: Capture :: Digital Camera",
+    "Topic :: Multimedia :: Graphics :: Graphics Conversion",
+    "Programming Language :: Python :: 3",
+    "Programming Language :: Python :: 3 :: Only",
+    "Programming Language :: Python :: 3.6",
+    "Programming Language :: Python :: 3.7",
+    "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",
+]
+
+[project.urls]
+Homepage = "https://github.com/schoolpost/PiDNG"
+
+[tool.setuptools.packages.find]
+where = ["src"]
+include = ["pidng*"]
+
+# Ensure non-Python files needed for building are included in distributions
+[tool.setuptools.package-data]
+"pidng" = [
+    "liblj92/*.h",
+]
+
+[[tool.setuptools.ext-modules]]
+name = "ljpegCompress"
+sources = [
+    "src/pidng/bitunpack.c",
+    "src/pidng/liblj92/lj92.c"
+]
+include-dirs = [
+    "src/pidng",
+]
+extra-compile-args = ["-std=gnu99"]
+extra-link-args = []