refactor: set up monorepo #1515

Job	Run time
Install on Node.js v18	39s
Install on Node.js v20	42s
Lint on Node.js v18	32s
Audit on Node.js v18	10s
Lint on Node.js v20	25s
Test (Integration) on Node.js v18	10m 18s
Audit on Node.js v20	12s
Test (Unit) on Node.js v18	24s
Test (Integration) on Node.js v20	10m 2s
Test (Unit) on Node.js v20	19s
Test (Integration) on Node.js v18 with L3	11m 25s
Test (Integration) on Node.js v20 with L3	11m 41s
Test (Integration) on Node.js v18 with L3 with custom gas token (16 decimals)	11m 38s
Test (Integration) on Node.js v20 with L3 with custom gas token (16 decimals)	12m 21s
Test (Integration) on Node.js v18 with L3 with custom gas token (18 decimals)	11m 42s
Test (Integration) on Node.js v20 with L3 with custom gas token (18 decimals)	11m 42s
Test (Integration) on Node.js v18 with L3 with custom gas token (20 decimals)	12m 11s
Test (Integration) on Node.js v20 with L3 with custom gas token (20 decimals)	12m 14s
	1h 58m 37s

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