Switch to uv, add project config files.

pyproject.toml

@@ -0,0 +1,23 @@
+[project]
+name = "snikket-web-portal"
+version = "0.1.0"
+description = "Add your description here"
+readme = "README.md"
+requires-python = ">=3.13"
+dependencies = [
+  "aiohttp~=3.12.13",
+  "email-validator~=1.3",
+  "environ-config~=20.0",
+  "flask-babel~=2.0,<3",
+  "flask-wtf~=1.1,<1.2",
+  "hsluv~=5.0",
+  "mypy>=1.16.1",
+  "python-dotenv~=0.15",
+  "types-toml>=0.10.8.20240310",
+  "typing-extensions>=4.14.0",
+  "werkzeug~=2.2,<3",
+  "wtforms~=3.0,<4",
+]
+
+[dependency-groups]
+dev = ["quart~=0.18,<0.19"]