Convert luau number

[jeparlefrancais]

Closes #256 #257

Add the new rule convert_luau_number to convert number literals like 100_000 into 100000 and binary numbers into hexadecimal numbers.

• add entry to the changelog

[github-actions]

Coverage after merging convert-luau-number into main will be

86.76%

Coverage Report for Changed Files

File	Stmts	Branches	Funcs	Lines	Uncovered Lines
src/nodes/expressions
number.rs	88.44%	100%	88.46%	88.44%	235–237, 277–281, 283, 295–299, 301–302, 326–330, 332, 368–372, 374, 417, 420–425, 427, 480
src/rules
convert_luau_number.rs	100%	100%	100%	100%
mod.rs	89.29%	100%	83.78%	89.97%	134–136, 155–157, 172, 193–195, 197, 243–245, 354, 394–396, 423, 430–433, 447, 496–498