feat: add new theme presets including Basecamp, Galactic Glitch, Brut…

[Vikaskumargd]

…alist Concrete, Google Modern, Glassmorphism Like, and OpenAI TTS Demo

[Melvynx]

nice add !

[jnsahaj]

I love some of these!

Galactic Glitch has some accessibility issues in the light mode where text isn't readable.

Brutalist Concrete looks so good.

@Vikaskumargd I'm in the process of building out a theme gallery for community themes like yours so people submitting great themes can receive credit.

Right now it's not possible, so if you want, you can submit these themes once that feature is ready.

Let me know!

[Vikaskumargd]

sure ☺️