Restore support for Python 3.7

Author: RobertoPrevato

.gitignore

@@ -1,5 +1,6 @@
 .vscode
-venv
+venv*
+dist
 htmlcov
 .coverage
 __pycache__

pyproject.toml

@@ -10,11 +10,12 @@ authors = [
 ]
 description = "Framework to handle authentication and authorization."
 readme = "README.md"
-requires-python = ">=3.8"
+requires-python = ">=3.7"
 classifiers = [
     "Development Status :: 3 - Alpha",
     "License :: OSI Approved :: MIT License",
     "Programming Language :: Python :: 3",
+    "Programming Language :: Python :: 3.7",
     "Programming Language :: Python :: 3.8",
     "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
@@ -24,6 +25,7 @@ classifiers = [
 keywords = ["authentication", "authorization", "identity", "claims", "strategy"]
 dependencies = [
     "neoteroi-di<=2.0.0",
+    "typing_extensions; python_version < '3.8'",
 ]
 
 [project.optional-dependencies]