ship-v2

[huangminghuang]

Change Description

This PR implements new SHiP get_blocks_request_v1 and get_blocks_result_v2 messages so that the client can request block_header only instead of the full blocks.

• When the nodeos receives get_blocks_request_v0, it will response with get_blocks_result_v1 to be compatible with existing clients.
• When the nodeos received get_blocks_request_v1, it will response with get_blocks_result_v2.

Change Type

Select ONE:

• Documentation

• Stability bug fix

• Other

• Other - special case

Testing Changes

Select ANY that apply:

• New Tests

• Existing Tests

• Test Framework

• CI System

• Other

Consensus Changes

• Consensus Changes

API Changes

• API Changes

Documentation Additions

• Documentation Additions

[spoonincode]

This is a PR to 2.1.x, but the abieos submodule is pointing to the eosio branch. The typical pattern is to create a v2.1.x branch in the submodule.