feat: switch from setup.cfg to pyproject.toml + hatchling

pyproject.toml

@@ -0,0 +1,57 @@
+
+[build-system]
+requires = ["hatchling"]
+build-backend = "hatchling.build"
+
+
+[project]
+name = "rattail-demo"
+version = "0.1.0"
+description = "Rattail Software Demo"
+readme = "README.rst"
+authors = [{name = "Lance Edgar", email = "lance@edbob.org"}]
+classifiers = [
+        "Development Status :: 3 - Alpha",
+        "Intended Audience :: Developers",
+        "Natural Language :: English",
+        "Operating System :: OS Independent",
+        "Programming Language :: Python",
+        "Programming Language :: Python :: 3",
+        "Topic :: Office/Business",
+        "Topic :: Software Development :: Libraries :: Python Modules",
+]
+dependencies = [
+        "invoke",
+        "psycopg2",
+        "rattail-tempmon",
+        "Tailbone",
+        "tailbone-corepos",
+        "tailbone-woocommerce",
+        "typer",
+        "xlrd",
+]
+
+
+[project.scripts]
+rattail-demo = "rattail_demo.commands:rattail_demo_typer"
+
+
+[project.entry-points."paste.app_factory"]
+main = "rattail_demo.web.app:main"
+webapi = "rattail_demo.web.webapi:main"
+
+
+[project.entry-points."rattail.config.extensions"]
+rattail-demo = "rattail_demo.config:DemoConfigExtension"
+
+
+[project.urls]
+Homepage = "https://demo.rattailproject.org"
+Repository = "https://kallithea.rattailproject.org/rattail-project/rattail-demo"
+Changelog = "https://kallithea.rattailproject.org/rattail-project/rattail-demo/files/master/CHANGES.rst"
+
+
+[tool.commitizen]
+version_provider = "pep621"
+tag_format = "v$version"
+update_changelog_on_bump = true