refactor: rename decimal utilities #1477

Job	Run time
Install on Node.js v18	46s
Install on Node.js v20	54s
Audit on Node.js v18	15s
Audit on Node.js v20	14s
Test (Integration) on Node.js v18	27m 37s
Lint on Node.js v18	56s
Test (Unit) on Node.js v18	1m 13s
Test (Integration) on Node.js v20	27m 59s
Lint on Node.js v20	51s
Test (Unit) on Node.js v20	1m 10s
Test (Integration) on Node.js v18 with L3	20m 29s
Test (Integration) on Node.js v20 with L3	20m 29s
Test (Integration) on Node.js v18 with L3 with custom gas token (16 decimals)	20m 58s
Test (Integration) on Node.js v20 with L3 with custom gas token (16 decimals)	20m 57s
Test (Integration) on Node.js v18 with L3 with custom gas token (18 decimals)	20m 56s
Test (Integration) on Node.js v20 with L3 with custom gas token (18 decimals)	20m 43s
Test (Integration) on Node.js v18 with L3 with custom gas token (20 decimals)	21m 6s
Test (Integration) on Node.js v20 with L3 with custom gas token (20 decimals)	20m 59s
	3h 48m 32s

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