Closes #19535 - Add Project Stanza to pyproject toml (#19643)

* feat(project): Add project metadata to pyproject.toml

Introduces project metadata, including name, version, authors, and
description, to `pyproject.toml` for enhanced package definition.
Also includes URLs for source code, documentation, and issue tracking.

* docs(release): Add checklist item for Python versions in pyproject.toml

Include step to update minimum and supported Python versions
in the project metadata file as part of the release process.

* docs(release): Update checklist to include pyproject.toml versioning

Add a step to update the version in `pyproject.toml` alongside
`release.yaml`.

* feat(project): Update pyproject.toml for best practices

Refreshes metadata to resolve deprecations and follow packaging best
practices. Updates include description, license, Python versions,
classifiers, maintainers, and repository URLs for improved compliance.

* fix(project): Update repository URL key in pyproject.toml

Replaces the 'Repository' key with 'Source' in accordance with updated
metadata conventions. This ensures compliance with modern best
practices for project metadata.

* fix(project): Specify Python 3 :: Only in classifiers

Updates the Python version classifier in `pyproject.toml` to indicate
support exclusively for Python 3. This change ensures clarity in the
supported Python versions for the project metadata.

pyproject.toml

@@ -1,6 +1,40 @@
 # See PEP 518 for the spec of this file
 # https://www.python.org/dev/peps/pep-0518/
 
+[project]
+name = "netbox"
+version = "4.3.1"
+requires-python = ">=3.10"
+authors = [
+    { name = "NetBox Community" }
+]
+maintainers = [
+    { name = "NetBox Community" }
+]
+description = "The premier source of truth powering network automation."
+readme = "README.md"
+license = "Apache-2.0"
+license-files = ["LICENSE.txt"]
+classifiers = [
+    "Development Status :: 5 - Production/Stable",
+    "Framework :: Django",
+    "Intended Audience :: Developers",
+    "Intended Audience :: System Administrators",
+    "Natural Language :: English",
+    "Programming Language :: Python",
+    "Programming Language :: Python :: 3 :: Only",
+    "Programming Language :: Python :: 3.10",
+    "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
+]
+
+
+[project.urls]
+Homepage = "https://netboxlabs.com/products/netbox/"
+Documentation = "https://netboxlabs.com/docs/netbox/"
+Source = "https://github.com/netbox-community/netbox"
+Issues = "https://github.com/netbox-community/netbox/issues"
+
 [tool.black]
 line-length = 120
 target_version = ['py310', 'py311', 'py312']