Changes to List plots for a project

added the optional property items/focus to the response with the 200 status

added the optional property items/hidden to the response with the 200 status

added the optional property items/layout to the response with the 200 status

added the optional property items/metrics to the response with the 200 status

added the optional property items/parameters to the response with the 200 status

added the required property items/y_axis to the response with the 200 status

for the path request parameter project, the type was generalized from string to no type