refactor: set up monorepo #1526

Job	Run time
Install on Node.js v18	45s
Install on Node.js v20	2m 22s
Audit on Node.js v18	21s
Lint on Node.js v18	58s
Audit on Node.js v20	20s
Test (Unit) on Node.js v18	1m 6s
Lint on Node.js v20	54s
Test (Integration) on Node.js v18	10m 27s
Test (Unit) on Node.js v20	1m 10s
Test (Integration) on Node.js v20	10m 23s
Test (Integration) on Node.js v18 with L3	12m 7s
Test (Integration) on Node.js v20 with L3	11m 57s
Test (Integration) on Node.js v18 with L3 with custom gas token (16 decimals)	12m 19s
Test (Integration) on Node.js v20 with L3 with custom gas token (16 decimals)	12m 24s
Test (Integration) on Node.js v18 with L3 with custom gas token (18 decimals)	12m 29s
Test (Integration) on Node.js v20 with L3 with custom gas token (18 decimals)	12m 16s
Test (Integration) on Node.js v18 with L3 with custom gas token (20 decimals)	12m 28s
Test (Integration) on Node.js v20 with L3 with custom gas token (20 decimals)	12m 22s
	2h 7m 8s

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