Text Style Popup

[octopols]

Description: This pull request introduces the implementation of the TextStylePopup, a versatile pop-up designed to accommodate various text-related features. This project is a part of Google Summer of Code 2023 program Project Description: https://summerofcode.withgoogle.com/programs/2023/projects/OifrwbNC

• [x] I signed the CLA
• [x] The title of the PR describes the problem it addresses
• [x] Each commit's message describes its purpose and effects, and references the issue it resolves
• [x] If changes are extensive, there is a sequence of easily reviewable commits
• [x] The code in the PR follows the coding rules
• [x] There are no unnecessary changes
• [x] The code compiles and runs on my machine, preferably after each commit individually
• [x] I created a unit test or vtest to verify the changes I made (if applicable)