chore: consolidate some CI workflows to reduce sprawl #16102

Job	Run time
build-nargo	2m 35s
yarn-lock	1m 9s
build-acvm-js	2m 14s
build-noirc-abi	1m 28s
build-noir-wasm	3m 59s
noirc_abi	1m 49s
ACVM JS (Node.js)	51s
ACVM JS (Browser)	2m 9s
Example scripts	17s
Noir JS	1m 6s
noir_codegen	1m 8s
Check external repo - ${{ matrix.project.repo }}	0s
noir_wasm	2m 9s
Integration Tests (Browser)	2m 9s
Integration Tests (Node)	2m 21s
End	1s
	25m 25s

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