Adding support to AlignDoubleArrow Fixer

`token_get_all` returns list of tokens, which we called in this project as tokens prototype.
It can be an array like `[T_WHITESPACE, '   ', 123] or a simple value like `;`.

`Token->isGivenKind` check if token prototype is an array and first array element (which we called kind) is one of given.
You can not use `Token->isGivenKind` for checking if token is `;`.