build(deps): Add gp-libs

Handles:
- doctests in markdown
- linkifying issues in changelog
- rendering table of contents for sphinx.ext.autodoc directives

And we can remove sphinx-autoapi

Author: tony

poetry.lock

@@ -57,6 +57,7 @@ sphinx = "*"
 aafigure = ">=0.6"
 pillow = "*"
 furo = "*"
+gp-libs = "*"
 sphinx-autobuild = "*"
 sphinx-autodoc-typehints = "*"
 sphinx-click = "*"
@@ -105,6 +106,7 @@ docs = [
   "sphinx-autoissues",
   "myst_parser",
   "furo",
+  "gp-libs",
   "aafigure",
   "pillow",
 ]