Add Support For Flipping Fuses

[dsanders11]

Would be nice if @electron/fiddle-core could flip fuses before running a fiddle. This would help make it easier to create repro cases for issues which involve fuses for use in Fiddle, and would also make it easier for users to play with fuses with a friendly UX in Fiddle.

I think this would dovetail with the suggested solution in #87 of extracting Electron to a temp directory for each run, so that we can flip fuses without causing side effects between runs.

[Alok-2005]

@dsanders11 I can fix this issue , pls assign it to me

[erickzhao]

Hey all, since this issue is part of our Google Summer of Code project ideas list or this year, we'll be locking this issue and not accepting contributions until the application phase is done.