feat(lsp): goto struct member inside Impl method #1644

Job	Run time
build-nargo	2m 20s
build-noirc-abi	3m 39s
build-acvm-js	3m 28s
build-noir-wasm	5m 19s
ACVM JS (Node.js)	34s
ACVM JS (Browser)	1m 17s
noir-js-backend-barretenberg	42s
noir_codegen	54s
noirc_abi	40s
Noir JS	3m 18s
noir_wasm	58s
Integration Tests	8m 33s
End	1s
	31m 43s

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