[mustache] Add all Writer methods (#41599)
[mustache] Add all Writer methods (#41599)

* Add all Writer methods

* tokens is string[][]

mcliment/DefinitelyTyped,dsebastien/DefinitelyTyped,dsebastien/DefinitelyTyped,georgemarshall/DefinitelyTyped,georgemarshall/DefinitelyTyped,markogresak/DefinitelyTyped,georgemarshall/DefinitelyTyped,georgemarshall/DefinitelyTyped