Is there any rule that stipulates that a GM may create new skills for the game? (other than Trade Craft skills). If so please provide tome title and page numbers. - Thanks!

There's no specific rule that states you may create skills for the game. However there's no rule that says you can't and there is the fact that it's your game do what you want with it. You just have to decide that the skill is needed, it's distinct enough to stand out from another skill and how it fits in with certain careers.