[Rich Text Editor]: Copy&Paste add possibility to reset all styles button

## Now

https://user-images.githubusercontent.com/17798957/209822520-c1fee9a1-0032-414b-959b-979a0b55f976.mov

In a current version we can't change text styles after pasting from outside document. Even if we move to the next line, all styles will be saved.
We have workaround by clicking choosing color button and reset colour and the other styles.

## To Do

I suggest you to implement one more button like a reset style button or separate into a few different buttons like reset font or size or colour.