chore!: Make file manager read-only to the compiler #916

Job	Run time
build-noirc-abi	3m 39s
build-acvm-js	3m 28s
build-nargo	2m 9s
build-noir-wasm	5m 19s
source-resolver	45s
ACVM JS (Node.js)	33s
ACVM JS (Browser)	1m 35s
noirc_abi	49s
noir-js-backend-barretenberg	46s
noir_codegen	57s
Noir JS	1m 46s
Integration Tests	8m 45s
noir_wasm	1m 4s
End	1s
	31m 36s

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