build: add husky to automatically format code

- husky installs a git hook to run make format every time you commit new code
- if `make format` fails (if a dependency is missing or prettier throws an error), the hook will still succeed as to not block people for dumb reasons
- pin prettier and husky to 3.2.5 and 9.0.11 respectively
- add prettier as a dependency for the `make format` rule

GNUmakefile

@@ -902,7 +902,7 @@ dist-test: dist
 	@rm -rf tildefriends-$(VERSION_NUMBER)
 .PHONY: dist-test
 
-format:
+format: prettier
 	@clang-format -i $(wildcard src/*.c src/*.h src/*.m)
 .PHONY: format