Add a const spec_id and build markers from it - #1974

Add a const spec_id and build markers from it#1974

leighmcculloch wants to merge 2 commits into

handcode-spec-refs-in-derivesstellar/rs-soroban-sdk:handcode-spec-refs-in-derivesfrom

const-spec-id-markerstellar/rs-soroban-sdk:const-spec-id-markerCopy head branch name to clipboard