[FEATURE] Theme style builder

[Darginec05]

Is this a unique feature?

• [x] I have checked "open" AND "closed" issues and this is not a duplicate

Is your feature request related to a problem/unavailable functionality? Please describe.

Package @yoopta/theme should provide several default themes. But also we should build Theme Builder to give possibility for building custom themes

Proposed Solution

Screenshots

No response

Do you want to work on this issue?

Yes

If "yes" to the above, please explain how you would technically implement this (issue will not be assigned if this is skipped)

Related https://github.com/yoopta-editor/Yoopta-Editor/issues/489