Updated add/removeEventListener typings
Updated add/removeEventListener typings

The add/removeEventListeners should accept a type that is defined by fscreen itself (6 possible string values instead of just `string`), and the  optional options parameter should be of type `boolean` or `AddEventListenerOptions` instead of `boolean` only.

georgemarshall/DefinitelyTyped,dsebastien/DefinitelyTyped,georgemarshall/DefinitelyTyped,magny/DefinitelyTyped,AgentME/DefinitelyTyped,AgentME/DefinitelyTyped,georgemarshall/DefinitelyTyped,AgentME/DefinitelyTyped,mcliment/DefinitelyTyped,AgentME/DefinitelyTyped,borisyankov/DefinitelyTyped,georgemarshall/DefinitelyTyped,markogresak/DefinitelyTyped,magny/DefinitelyTyped,dsebastien/DefinitelyTyped,borisyankov/DefinitelyTyped