refactor: set up monorepo #1531

Job	Run time
Install on Node.js v18	13s
Install on Node.js v20	14s
Lint on Node.js v18	26s
Test (Unit) on Node.js v18	20s
Audit on Node.js v18	18s
Test (Unit) on Node.js v20	23s
Test (Integration) on Node.js v18	10m 2s
Audit on Node.js v20	11s
Lint on Node.js v20	18s
Test (Integration) on Node.js v20	10m 4s
Test (Integration) on Node.js v18 with L3	11m 23s
Test (Integration) on Node.js v20 with L3	11m 33s
Test (Integration) on Node.js v18 with L3 with custom gas token (16 decimals)	11m 55s
Test (Integration) on Node.js v20 with L3 with custom gas token (16 decimals)	12m 4s
Test (Integration) on Node.js v18 with L3 with custom gas token (18 decimals)	11m 37s
Test (Integration) on Node.js v20 with L3 with custom gas token (18 decimals)	11m 38s
Test (Integration) on Node.js v18 with L3 with custom gas token (20 decimals)	11m 35s
Test (Integration) on Node.js v20 with L3 with custom gas token (20 decimals)	11m 51s
	1h 56m 5s

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