- Change the `drawRect` method in `DrawScope` like the method from the Compose UI
- Add support for `DrawStyle`: `Fill` and `Stroke` in `DrawScope#drawRect`
- Add support for drawing a rectangle from text characters
- Add `Filler` with code point
- Change the robot sample to show `drawRect` with `Stroke`
- Add `Color.Unspecified` for replace nullable `Color`
- Add some extension functions for `Color` to check on `Color.Unspecified`
- Use `TextStyle.Unspecified` instead null for `TextStyle`
- Add some extension functions for `TextStyle` to check on `TextStyle.Unspecified` and `TextStyle.Empty`
- Make `TextStyle` an inline class
- Using `Int` as codepoint (`TextPixel#codePoint`) instead of `String` in `TextPixel` (`TextPixel#value`)
- Rename `style: TextStyle` to `textStyle: TextStyle` for clearer and less confusing naming, as there are several other styles
- Add emoji to demo sample and use of 2 styles for part of the text
