Python: Include custom static files in generated Python docs

src/main/resources/com/google/api/codegen/py/docs/conf.py.snip

@@ -165,7 +165,7 @@
   @# Add any paths that contain custom static files (such as style sheets) here,
   @# relative to this directory. They are copied after the builtin static files,
   @# so a file named "default.css" will overwrite the builtin "default.css".
-  @# html_static_path = []
+  html_static_path = ["_static"]
 
   @# Add any extra paths that contain custom files (such as robots.txt or
   @# .htaccess) here, relative to this directory. These files are copied

src/test/java/com/google/api/codegen/gapic/testdata/py/python_library.baseline

@@ -470,7 +470,7 @@ html_theme_options = {
 # Add any paths that contain custom static files (such as style sheets) here,
 # relative to this directory. They are copied after the builtin static files,
 # so a file named "default.css" will overwrite the builtin "default.css".
-# html_static_path = []
+html_static_path = ["_static"]
 
 # Add any extra paths that contain custom files (such as robots.txt or
 # .htaccess) here, relative to this directory. These files are copied

src/test/java/com/google/api/codegen/gapic/testdata/py/python_multiple_services.baseline

@@ -451,7 +451,7 @@ html_theme_options = {
 # Add any paths that contain custom static files (such as style sheets) here,
 # relative to this directory. They are copied after the builtin static files,
 # so a file named "default.css" will overwrite the builtin "default.css".
-# html_static_path = []
+html_static_path = ["_static"]
 
 # Add any extra paths that contain custom files (such as robots.txt or
 # .htaccess) here, relative to this directory. These files are copied

src/test/java/com/google/api/codegen/gapic/testdata/py/python_no_path_templates.baseline

@@ -451,7 +451,7 @@ html_theme_options = {
 # Add any paths that contain custom static files (such as style sheets) here,
 # relative to this directory. They are copied after the builtin static files,
 # so a file named "default.css" will overwrite the builtin "default.css".
-# html_static_path = []
+html_static_path = ["_static"]
 
 # Add any extra paths that contain custom files (such as robots.txt or
 # .htaccess) here, relative to this directory. These files are copied

src/test/java/com/google/api/codegen/gapic/testdata/py/python_samplegen_config_migration_library.baseline

@@ -470,7 +470,7 @@ html_theme_options = {
 # Add any paths that contain custom static files (such as style sheets) here,
 # relative to this directory. They are copied after the builtin static files,
 # so a file named "default.css" will overwrite the builtin "default.css".
-# html_static_path = []
+html_static_path = ["_static"]
 
 # Add any extra paths that contain custom files (such as robots.txt or
 # .htaccess) here, relative to this directory. These files are copied

src/test/java/com/google/api/codegen/protoannotations/testdata/python_library.baseline

@@ -470,7 +470,7 @@ html_theme_options = {
 # Add any paths that contain custom static files (such as style sheets) here,
 # relative to this directory. They are copied after the builtin static files,
 # so a file named "default.css" will overwrite the builtin "default.css".
-# html_static_path = []
+html_static_path = ["_static"]
 
 # Add any extra paths that contain custom files (such as robots.txt or
 # .htaccess) here, relative to this directory. These files are copied

src/test/java/com/google/api/codegen/protoannotations/testdata/python_library_no_gapic_config.baseline

@@ -4503,7 +4503,7 @@ html_theme_options = {
 # Add any paths that contain custom static files (such as style sheets) here,
 # relative to this directory. They are copied after the builtin static files,
 # so a file named "default.css" will overwrite the builtin "default.css".
-# html_static_path = []
+html_static_path = ["_static"]
 
 # Add any extra paths that contain custom files (such as robots.txt or
 # .htaccess) here, relative to this directory. These files are copied