py(deps[dev]): Point to sphinx-autodoc-api-style from gp-sphinx api-styling

why: Use the new standalone api-style package instead of gp_sphinx.api_style.
what:
- Add sphinx-autodoc-api-style to dev and docs dependency groups
- Add uv.sources entry for local editable install
- Update docs/conf.py: gp_sphinx.api_style -> sphinx_autodoc_api_style

Author: tony

docs/conf.py

@@ -31,7 +31,7 @@
     light_logo="img/libtmux.svg",
     dark_logo="img/libtmux.svg",
     extra_extensions=[
-        "gp_sphinx.api_style",
+        "sphinx_autodoc_api_style",
         "sphinx_autodoc_pytest_fixtures",
         "sphinx.ext.todo",
     ],

pyproject.toml

@@ -53,6 +53,7 @@ Changes = "https://github.com/tmux-python/libtmux/blob/master/CHANGES"
 dev = [
   # Docs (via gp-sphinx)
   "gp-sphinx>=0.0.1a1",
+  "sphinx-autodoc-api-style>=0.0.1a1",
   "sphinx-autodoc-pytest-fixtures>=0.0.1a1",
   "sphinx-autobuild",
   "types-docutils",
@@ -75,6 +76,7 @@ dev = [
 
 docs = [
   "gp-sphinx>=0.0.1a1",
+  "sphinx-autodoc-api-style>=0.0.1a1",
   "sphinx-autodoc-pytest-fixtures>=0.0.1a1",
   "sphinx-autobuild",
 ]
@@ -105,8 +107,9 @@ requires = ["hatchling"]
 build-backend = "hatchling.build"
 
 [tool.uv.sources]
-gp-sphinx = { git = "https://github.com/git-pull/gp-sphinx.git", branch = "api-styling", subdirectory = "packages/gp-sphinx" }
-sphinx-autodoc-pytest-fixtures = { git = "https://github.com/git-pull/gp-sphinx.git", branch = "api-styling", subdirectory = "packages/sphinx-autodoc-pytest-fixtures" }
+gp-sphinx = { path = "../gp-sphinx/packages/gp-sphinx", editable = true }
+sphinx-autodoc-api-style = { path = "../gp-sphinx/packages/sphinx-autodoc-api-style", editable = true }
+sphinx-autodoc-pytest-fixtures = { path = "../gp-sphinx/packages/sphinx-autodoc-pytest-fixtures", editable = true }
 
 [tool.mypy]
 strict = true