Add Sequence::sink()

[Baptouuuu]

Request

In many Innmind packages the pattern of reducing a Sequence with a carried value of Maybe or Either is used to iteratively operate IO operations that may fail and return this potential failure. (An example is the creation of a temporary file in innmind/operating-system).

The current implementation brings 2 problems:

• the typing of this reducing is annoying because Psalm have a hard time keeping track of types inside the Maybe/Either
• if the reducing fails it keeps iterating over the source Sequence even though it's not used

Solution

This PR adds a Sequence::sink()->until() that is the same as Sequence::reduce() except it uses the continuation pattern to know when to stop reducing.

On top of that, ->sink()->maybe() and ->sink()->either() are added as shortcuts to imply the continuation from the values contained in the Maybe/Either.

This should help simplify other packages and their performance.