Add documentations on props

[OozyGrub]

Add documentations on each props. Before that, make sure to understand the logic and provide clear explanation for input property especially in this file

Example

thai-tax/src/types/props.d.ts

Lines 45 to 52 in 19d56dd

	/** Government Pension Fund */
	gpf: number;
	/** National Savings Fund */
	nsf: number;
	/** Private School Teacher */
	pvt: number;