Migrate setup configuration to pyproject.toml

Change-Id: I2a6a6aacc5b37ca0ee45a236b292a32a102c60a0
Signed-off-by: Stephen Finucane <stephenfin@redhat.com>

pyproject.toml

@@ -1,3 +1,37 @@
 [build-system]
 requires = ["pbr>=6.1.1"]
 build-backend = "pbr.build"
+
+[project]
+name = "etcd3gw"
+description = "A Python client for etcd3 grpc-gateway v3 API"
+authors = [
+    {name = "OpenStack", email = "openstack-discuss@lists.openstack.org"},
+]
+readme = {file = "README.rst", content-type = "text/x-rst"}
+license = {text = "Apache-2.0"}
+dynamic = ["version", "dependencies"]
+requires-python = ">=3.10"
+classifiers = [
+    "Environment :: Console",
+    "Environment :: OpenStack",
+    "Intended Audience :: Information Technology",
+    "Intended Audience :: Developers",
+    "License :: OSI Approved :: Apache Software License",
+    "Operating System :: OS Independent",
+    "Programming Language :: Python",
+    "Programming Language :: Python :: 3",
+    "Programming Language :: Python :: 3.10",
+    "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
+    "Programming Language :: Python :: 3.13",
+]
+
+[project.urls]
+Homepage = "https://docs.openstack.org/etcd3gw"
+Repository = "https://opendev.org/openstack/etcd3gw"
+
+[tool.setuptools]
+packages = [
+    "etcd3gw"
+]

setup.cfg

@@ -1,28 +1,2 @@
 [metadata]
 name = etcd3gw
-summary = A python client for etcd3 grpc-gateway v3 API
-description_file =
-    README.md
-author = OpenStack
-author_email = openstack-discuss@lists.openstack.org
-home_page = https://docs.openstack.org/etcd3gw/latest/
-python_requires = >=3.10
-classifier =
-    Environment :: Console
-    Environment :: OpenStack
-    Intended Audience :: Developers
-    Intended Audience :: Information Technology
-    License :: OSI Approved :: Apache Software License
-    Operating System :: OS Independent
-    Programming Language :: Python
-    Programming Language :: Python :: 3
-    Programming Language :: Python :: 3.10
-    Programming Language :: Python :: 3.11
-    Programming Language :: Python :: 3.12
-    Programming Language :: Python :: 3.13
-    Programming Language :: Python :: 3 :: Only
-    Topic :: System :: Distributed Computing
-
-[files]
-packages =
-    etcd3gw