PyAPI Docs: Add 'gpu.state' module

Also exclude `gpu.shader` from quick tests.

doc/python_api/sphinx_doc_gen.py

@@ -252,6 +252,8 @@ else:
         "gpu.types",
         "gpu.matrix",
         "gpu.select",
+        "gpu.shader",
+        "gpu.state",
         "gpu_extras",
         "idprop.types",
         "mathutils",
@@ -1983,6 +1985,7 @@ def write_rst_importable_modules(basepath):
         "gpu.matrix": "GPU Matrix",
         "gpu.select": "GPU Select",
         "gpu.shader": "GPU Shader",
+        "gpu.state": "GPU State",
         "bmesh": "BMesh Module",
         "bmesh.ops": "BMesh Operators",
         "bmesh.types": "BMesh Types",