feat: Add initial brand support

[coire1]

Description

This PR introduces the BrandBloc, a Bloc responsible for managing the brand state and the catalyst_voices_brands package, a package the contains all possible brands and related Theme and the ThemeBuilder utility.

Related Issue(s)

Closes #411

Screenshots

ifr-2024-04-16_19.02.07.mp4

Please confirm the following checks

• My code follows the style guidelines of this project
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream module

[github-actions]

✅ Test Report | ${\color{lightgreen}Pass: 48/48}$ | ${\color{red}Fail: 0/48}$ |