use an inline function to reduce code duplication when getting styles in chameleon.zig

this pr replaces the repeated calls to ```zig const style = wrapStyle(@field(Styles, @src().fn_name)); comptime return .{ .level = self.level, .visible_always = self.visible_always, .open = self.open ++ style[0], .close = self.close ++ style[1], }; ``` with the function ```zig Utils.getStyle(self, @src().fn_name); ``` to reduce a lot of code duplication when getting the styles from styles.zig