refactor: set up monorepo #1535

Job	Run time
Install on Node.js v18	42s
Install on Node.js v20	44s
Lint on Node.js v18	56s
Test (Unit) on Node.js v18	1m 12s
Lint on Node.js v20	49s
Test (Integration) on Node.js v18	27m 44s
Test (Unit) on Node.js v20	58s
Audit on Node.js v18	14s
Test (Integration) on Node.js v20	27m 52s
Audit on Node.js v20	13s
Test (Integration) on Node.js v18 with L3	20m 22s
Test (Integration) on Node.js v20 with L3	20m 26s
Test (Integration) on Node.js v18 with L3 with custom gas token (16 decimals)	20m 53s
Test (Integration) on Node.js v20 with L3 with custom gas token (16 decimals)	21m 1s
Test (Integration) on Node.js v18 with L3 with custom gas token (18 decimals)	20m 52s
Test (Integration) on Node.js v20 with L3 with custom gas token (18 decimals)	21m 11s
Test (Integration) on Node.js v18 with L3 with custom gas token (20 decimals)	20m 55s
Test (Integration) on Node.js v20 with L3 with custom gas token (20 decimals)	21m 6s
	3h 48m 10s

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