refactor: set up monorepo #1528

Job	Run time
Install on Node.js v18	50s
Install on Node.js v20	44s
Test (Unit) on Node.js v18	1m 11s
Audit on Node.js v18	14s
Lint on Node.js v18	54s
Test (Unit) on Node.js v20	1m 9s
Audit on Node.js v20	14s
Test (Integration) on Node.js v18	27m 39s
Lint on Node.js v20	49s
Test (Integration) on Node.js v20	27m 43s
Test (Integration) on Node.js v18 with L3	20m 25s
Test (Integration) on Node.js v20 with L3	21m 17s
Test (Integration) on Node.js v18 with L3 with custom gas token (16 decimals)	21m 4s
Test (Integration) on Node.js v20 with L3 with custom gas token (16 decimals)	21m 10s
Test (Integration) on Node.js v18 with L3 with custom gas token (18 decimals)	21m 12s
Test (Integration) on Node.js v20 with L3 with custom gas token (18 decimals)	21m 8s
Test (Integration) on Node.js v18 with L3 with custom gas token (20 decimals)	20m 52s
Test (Integration) on Node.js v20 with L3 with custom gas token (20 decimals)	22m 21s
	3h 50m 56s

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