docs: enforce cc for pull requests and issues (#220)

* docs: enforce conventional commits in `contributing.md`

* style: deno lint

* docs: enforce cc for pull requests and issues only

* style: fix wrap

* fix: wording

* fix: grammar

---------

Co-authored-by: Samuel Kopp <62482066+boywithkeyboard@users.noreply.github.com>

contributing.md

@@ -1,3 +1,9 @@
+### Follow Conventional Commits
+
+This repository enforces the
+[Conventional Commits](https://www.conventionalcommits.org/en/v1.0.0/)
+specification for writing pull requests and issues titles.
+
 ### Write a meaningful title
 
 We ask you to write a short and meaningful title while going into more detail