WIP add some more proposed rules to macro guidelines#69

AlexCeleste wants to merge 2 commits into

Safety-Critical-Rust-Consortium:mainSafety-Critical-Rust-Consortium/safety-critical-rust-coding-guidelines:mainfrom

AlexCeleste:additional-macro-guideline-stubsAlexCeleste/safety-critical-rust-coding-guidelines:additional-macro-guideline-stubsCopy head branch name to clipboard