proposal: hash: permit usage of encoding/binary package

[ErikPelli]

In the pull request #55068 it turned out that the package hash must not depend on encoding/binary.
In my opinion, if this was allowed, the code would be cleaner (I recommend to see the proposed changes in the PR) and the practical difference would not be much, since encoding/binary has little code in it that does what is needed.

Furthermore, this package is already used as a replacement for the append/put uint32/64 functions in the crypto package.
I therefore propose to allow the use of encoding/binary also in the hash package and avoid code duplication.

[dsnet]

I don't think this needs to be a proposal. At the end of the day, the reason why we can't use encoding/binary in a number of places is due to: #54097.

[rsc]

This proposal has been added to the active column of the proposals project
and will now be reviewed at the weekly proposal review meetings.
— rsc for the proposal review group

[rsc]

As Joe noted, this is not something we can do.

[rsc]

Based on the discussion above, this proposal seems like a likely decline.
— rsc for the proposal review group

[rsc]

No change in consensus, so declined.
— rsc for the proposal review group