docs: add RFC for enhanced `dependsOn` syntax #1227

Job	Run time
Format and Check Deps	44s
detect-changes	3s
Clippy	1m 15s
Test (musl)	2m 50s
Test (namespace-profile-linux-x64-default, x86_64-unknown-linux-gnu, cargo-zigbuild, x86_64-unkno...	1m 19s
Test (namespace-profile-mac-default, x86_64-apple-darwin, cargo, x86_64-apple-darwin)	2m 17s
Test (namespace-profile-mac-default, aarch64-apple-darwin, cargo, aarch64-apple-darwin)	55s
Test (windows-latest, x86_64-pc-windows-msvc, cargo, x86_64-pc-windows-msvc)	5m 21s
done	1s
	14m 45s

Provide feedback