Migrate from setup.py to pyproject.toml

Move all package metadata from setup.py to pyproject.toml using
PEP 621 declarative format. Use setuptools as the build backend
with automatic package discovery for picamera2*.

Signed-off-by: Naushir Patuck <naush@raspberrypi.com>

Author: naushir

pyproject.toml

@@ -1,3 +1,50 @@
+[build-system]
+requires = ["setuptools>=64"]
+build-backend = "setuptools.backends._legacy:_Backend"
+
+[project]
+name = "picamera2"
+version = "0.3.34"
+description = "The libcamera-based Python interface to Raspberry Pi cameras, based on the original Picamera library"
+readme = "README.md"
+license = "BSD-2-Clause"
+requires-python = ">=3.9"
+authors = [
+    { name = "Raspberry Pi & Raspberry Pi Foundation", email = "picamera2@raspberrypi.com" },
+]
+classifiers = [
+    "Development Status :: 4 - Beta",
+    "Intended Audience :: Developers",
+    "License :: OSI Approved :: BSD License",
+    "Operating System :: POSIX :: Linux",
+    "Programming Language :: Python :: 3.9",
+    "Topic :: Multimedia :: Graphics :: Capture :: Digital Camera",
+]
+dependencies = [
+    "numpy",
+    "PiDNG",
+    "piexif",
+    "pillow",
+    "simplejpeg",
+    "videodev2",
+    "python-prctl",
+    "av",
+    "libarchive-c",
+    "tqdm",
+    "jsonschema",
+    "OpenEXR",
+]
+
+[project.optional-dependencies]
+gui = ["pyopengl", "PyQt5"]
+
+[project.urls]
+Homepage = "https://github.com/RaspberryPi/picamera2"
+"Bug Tracker" = "https://github.com/RaspberryPi/picamera2/issues"
+
+[tool.setuptools.packages.find]
+include = ["picamera2*"]
+
 [tool.ruff]
 line-length = 127
 target-version = "py39"