Draft: Contrib: add Taquito-rpc-bin placeholder

DO NOT MERGE

STATUS: Do not merge, we are checking licensing information and compatibility.

Context

Build a package that may replace taquito-rpc, using binary RPC instead of Json RPC.

This MR firstly contains a copy of the NPM package named taquito-rpc. That copy has been pruned to some extent and renamed taquito-rpc-bin. The intention is to use kaitai to provide functions to decode binary data provided by the node (instead of json data). If this is successful, Taquito will have a new feature: query the node using binary RPC instead of Json RPC.

Some clear expected consequences are:

• the queried node may treat more requests (because binary RPC requires less from the node, both in terms of computing power and in terms of network usage)
• the Javascript client will have a greater load (because it'll have to decode binary into Javascript, instead of being able to directly use Json data). However it is expected that a JavaScript client never performs enough RPC requests for that load increase to be problematic.

Once the JavaScript bindings are available, we can start using those to finish building taquito-rpc-bin.

Manually testing the MR

Checklist

• Document the interface of any function added or modified (see the coding guidelines)
• Document any change to the user interface, including configuration parameters (see node configuration)
• Provide automatic testing (see the testing guide).
• For new features and bug fixes, add an item in the appropriate changelog (docs/protocols/alpha.rst for the protocol and the environment, CHANGES.rst at the root of the repository for everything else).
• Select suitable reviewers using the Reviewers field below.
• Select as Assignee the next person who should take action on that MR