WIP: Hoist escape_md to shared diffguard-types crate#609

EffortlessSteven wants to merge 3 commits intomainEffortlessMetrics/diffguard:mainfrom

feat/work-33cc5aa2/escape-md-duplicated-in-main-rs-and-render-rsEffortlessMetrics/diffguard:feat/work-33cc5aa2/escape-md-duplicated-in-main-rs-and-render-rsCopy head branch name to clipboard