Migrate ruff/mypy config to current conventions

Root pyproject.toml:
- Move [tool.ruff.per-file-ignores] and [tool.ruff.pydocstyle] under
  [tool.ruff.lint.*] — top-level placement was deprecated in ruff 0.2
- Add [dependency-groups] for uv-native dev/lint/test groups

psqlpy-stress/pyproject.toml:
- Same ruff lint-namespace migration; also move isort under [tool.ruff.lint.isort]
- Add COM812 to ignore list (conflicts with ruff-format's trailing-comma style)
- Extend [tool.mypy] with ignore_missing_imports, allow_subclassing_any,
  allow_untyped_calls/decorators, and warn_*=false — psqlpy-stress depends on
  several untyped third-party packages (sqlalchemy, piccolo, psqlpy, asyncpg)
  that lack stubs; strict mode needs these flags to stay actionable

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: Dev-iL

psqlpy-stress/pyproject.toml

@@ -35,8 +35,12 @@ requires = ["poetry-core"]
 build-backend = "poetry.core.masonry.api"
 
 [tool.ruff]
+line-length = 89
+
+[tool.ruff.lint]
 ignore = [
     "ANN401",
+    "COM812",
     "SLF001",
     "TRY003",
     "PLR0913",
@@ -47,13 +51,18 @@ ignore = [
     "D",
     "T201",
 ]
-line-length = 89
 select = ["ALL"]
 fixable = ["ALL"]
 
-[tool.ruff.isort]
+[tool.ruff.lint.isort]
 lines-after-imports = 2
 no-lines-before = ["standard-library", "local-folder"]
 
 [tool.mypy]
 strict = true
+ignore_missing_imports = true
+allow_subclassing_any = true
+allow_untyped_calls = true
+allow_untyped_decorators = true
+warn_return_any = false
+warn_unused_ignores = false

pyproject.toml

@@ -39,6 +39,18 @@ maintainers = [{ name = "Kiselev Aleksandr", email = "askiselev00@gmail.com" }]
 description = "Async PostgreSQL driver for Python written in Rust"
 dynamic = ["version"]
 
+[dependency-groups]
+dev = [
+  {include-group = "lint"},
+  {include-group = "test"}
+]
+lint = [
+  "ruff"
+]
+test = [
+  "pytest"
+]
+
 [tool.maturin]
 python-source = "python"
 module-name = "psqlpy._internal"
@@ -89,7 +101,7 @@ ignore = [
     "S311",
 ]
 
-[tool.ruff.per-file-ignores]
+[tool.ruff.lint.per-file-ignores]
 "python/psqlpy/*" = ["PYI021"]
 "python/tests/*" = [
     "S101", # Use of assert detected
@@ -104,7 +116,7 @@ ignore = [
 "./psqlpy-stress/psqlpy_stress/migrations/env.py" = ["INP001"]
 "examples/*" = ["INP001"]
 
-[tool.ruff.pydocstyle]
+[tool.ruff.lint.pydocstyle]
 convention = "pep257"
 ignore-decorators = ["typing.overload"]