feat: traverse method args in comptime

[felipensp]

Fix #20926

fn register[T]() []string {
	mut args := []string{}
	$for method in T.methods {
		$for arg in method.args {
			$if arg.typ is f32 {
				args << 'f32: ${arg.name} ${typeof(arg.typ).name}'
			} $else $if arg.typ is voidptr {
				args << '&void: ${arg.name} ${typeof(arg.typ).name}'
			} $else {
			}
		}
	}
	return args
}

[medvednikov]

Great job! It should be called method.params though.

There's another args => params name change needed in comptime.