feat: Dynamic index for slice insert and remove #161

Job	Run time
build-nargo	2m 12s
build-noir-wasm	5m 12s
build-acvm-js	3m 7s
build-noirc-abi	3m 43s
source-resolver	29s
ACVM JS (Browser)	54s
ACVM JS (Node.js)	22s
noir_codegen	42s
noirc_abi	31s
noir-js-backend-barretenberg	23s
Noir JS	1m 17s
noir_wasm	56s
Integration Tests	5m 1s
End	1s
	24m 50s

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