feat: first draft HIP-1137#1305

rwalworth wants to merge 3 commits intomainhiero-ledger/hiero-sdk-cpp:mainfrom

01206-advanced-implement-hip-1137-block-node-discoverability-via-on-chain-registryhiero-ledger/hiero-sdk-cpp:01206-advanced-implement-hip-1137-block-node-discoverability-via-on-chain-registryCopy head branch name to clipboard