Python: Add Purview Middleware (#1142)

* [Py Purview] Purview Python Initial Commit

* [Py Purview] Purview Python Minor Fixes

* [Py Purview] Purview Python Comment Fixesish

* [Py Purview] Purview Python Agent Middleware Done

* [Py Purview] Purview Python Agent Middleware Done

* [Py Purview] Purview Python Lint Errors

* [Py Purview] Purview Python Final Hopefully

* [Py Purview] Purview Python Final Hopefully

* [Py Purview] Purview Python Fix ReadMe

* [Py Purview] Purview Python Fix MyPy

* [Py Purview] Purview Python Minor Updates on comments

* [Py Purview] Purview Python Fix Build Error

---------

Co-authored-by: Dmytro Struk <13853051+dmytrostruk@users.noreply.github.com>

python/packages/purview/pyproject.toml

@@ -0,0 +1,87 @@
+[project]
+name = "agent-framework-purview"
+description = "Microsoft Purview (Graph dataSecurityAndGovernance) integration for Microsoft Agent Framework."
+authors = [{ name = "Microsoft", email = "af-support@microsoft.com"}]
+readme = "README.md"
+requires-python = ">=3.10"
+version = "0.1.0b1"
+license-files = ["LICENSE"]
+urls.homepage = "https://github.com/microsoft/agent-framework"
+urls.source = "https://github.com/microsoft/agent-framework/tree/main/python"
+urls.release_notes = "https://github.com/microsoft/agent-framework/releases"
+urls.issues = "https://github.com/microsoft/agent-framework/issues"
+classifiers = [
+  "License :: OSI Approved :: MIT License",
+  "Development Status :: 3 - Alpha",
+  "Intended Audience :: Developers",
+  "Programming Language :: Python :: 3",
+  "Programming Language :: Python :: 3.10",
+  "Programming Language :: Python :: 3.11",
+  "Programming Language :: Python :: 3.12",
+  "Programming Language :: Python :: 3.13",
+  "Framework :: Pydantic :: 2",
+  "Typing :: Typed",
+]
+dependencies = [
+    "agent-framework-core",
+    "azure-core>=1.30.0",
+    "httpx>=0.27.0",
+]
+
+[tool.uv]
+prerelease = "if-necessary-or-explicit"
+environments = [
+    "sys_platform == 'darwin'",
+    "sys_platform == 'linux'",
+    "sys_platform == 'win32'"
+]
+
+[tool.uv-dynamic-versioning]
+fallback-version = "0.0.0"
+[tool.pytest.ini_options]
+testpaths = 'tests'
+addopts = "-ra -q -r fEX"
+asyncio_mode = "auto"
+asyncio_default_fixture_loop_scope = "function"
+filterwarnings = []
+
+[tool.ruff]
+extend = "../../pyproject.toml"
+
+[tool.coverage.run]
+omit = [
+    "**/__init__.py"
+]
+
+[tool.pyright]
+extend = "../../pyproject.toml"
+exclude = ['tests']
+
+[tool.mypy]
+plugins = ['pydantic.mypy']
+strict = true
+python_version = "3.10"
+ignore_missing_imports = true
+disallow_untyped_defs = true
+no_implicit_optional = true
+check_untyped_defs = true
+warn_return_any = true
+show_error_codes = true
+warn_unused_ignores = false
+disallow_incomplete_defs = true
+disallow_untyped_decorators = true
+
+[tool.bandit]
+targets = ["agent_framework_purview"]
+exclude_dirs = ["tests"]
+
+[tool.poe]
+executor.type = "uv"
+include = "../../shared_tasks.toml"
+[tool.poe.tasks]
+mypy = "mypy --config-file $POE_ROOT/pyproject.toml agent_framework_purview"
+test = "pytest --cov=agent_framework_purview --cov-report=term-missing:skip-covered tests"
+
+[build-system]
+requires = ["flit-core >= 3.9,<4.0"]
+build-backend = "flit_core.buildapi"