migrate to pyproject.toml

Signed-off-by: Inada Naoki <songofacandy@gmail.com>

fluent/__about__.py

@@ -0,0 +1 @@
+__version__ = '0.10.1dev1'

pyproject.toml

@@ -0,0 +1,54 @@
+[build-system]
+requires = ["hatchling"]
+build-backend = "hatchling.build"
+
+[project]
+name = "fluent-logger"
+dynamic = ["version"]
+description = "A Python logging handler for Fluentd event collector"
+readme = "README.rst"
+license = { file = "COPYING" }
+requires-python = ">=3.7"
+authors = [
+    { name = "Kazuki Ohta", email = "kazuki.ohta@gmail.com" },
+]
+maintainers = [
+    { name = "Arcadiy Ivanov", email = "arcadiy@ivanov.biz" },
+    { name = "Inada Naoki", email = "songofacandy@gmail.com" },
+]
+classifiers = [
+    "Development Status :: 5 - Production/Stable",
+    "Intended Audience :: Developers",
+    "Programming Language :: Python :: 3",
+    "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",
+    "Programming Language :: Python :: Implementation :: CPython",
+    "Programming Language :: Python :: Implementation :: PyPy",
+    "Topic :: System :: Logging",
+]
+dependencies = [
+    "msgpack>=1.0",
+]
+
+[project.urls]
+Download = "https://pypi.org/project/fluent-logger/"
+Homepage = "https://github.com/fluent/fluent-logger-python"
+
+[tool.hatch.version]
+path = "fluent/__about__.py"
+
+[tool.hatch.build.targets.sdist]
+exclude = [
+    "/.github",
+    "/.tox",
+    "/.venv",
+]
+
+[tool.hatch.build.targets.wheel]
+include = [
+    "/fluent",
+]