Migrate dependency management from pip to uv

- Add a uv workspace at the repository root covering all packages/kaya-* members
- Replace pip-compile requirements files with a committed uv.lock
- Remove redundant per-package dev extras
- Build and publish artifacts with uv build and uv publish in CI
- Update the README with uv sync/run/build commands

pyproject.toml

@@ -0,0 +1,51 @@
+[project]
+name = "kaya"
+version = "0.0.0"
+description = "Development workspace for the Kaya lightweight ASGI web framework"
+requires-python = ">=3.10"
+dependencies = [
+    "kaya-core",
+    "kaya-rsgi",
+    "kaya-session",
+    "kaya-session-redis",
+    "kaya-session-memcache",
+    "kaya-oidc",
+    "kaya-openapi",
+    "kaya-cors",
+    "kaya-forwarded",
+    "kaya-otel",
+]
+
+[dependency-groups]
+dev = [
+    "fakeredis",
+    "mypy",
+    "ipdb",
+    "httpx",
+    "httpx-ws",
+]
+
+[tool.uv]
+package = false
+required-version = ">=0.13"
+
+[tool.uv.workspace]
+members = ["packages/*"]
+
+[tool.uv.sources]
+kaya-core = { workspace = true }
+kaya-rsgi = { workspace = true }
+kaya-session = { workspace = true }
+kaya-session-redis = { workspace = true }
+kaya-session-memcache = { workspace = true }
+kaya-oidc = { workspace = true }
+kaya-openapi = { workspace = true }
+kaya-cors = { workspace = true }
+kaya-forwarded = { workspace = true }
+kaya-otel = { workspace = true }
+pwo = { index = "gitea" }
+
+[[tool.uv.index]]
+name = "gitea"
+url = "https://gitea.woggioni.net/api/packages/woggioni/pypi/simple"
+explicit = true