M!130 - docs: Move the gi-docgen documentaton to the parent folder
The camel folder was clashing with the gtk-doc folder, move it to the parent folder as it also has the advantage to separate the gtk-doc of the gi-docgen one.
The camel folder was clashing with the gtk-doc folder, move it to the parent folder as it also has the advantage to separate the gtk-doc of the gi-docgen one.