Gemma 3 support

[StyleT]

Hi!

Thanks for the awesome project!

According to ggml-org/llama.cpp#12343 llama.cpp already supports Gemma 3. Would be awesome to see this dependency updated here too!

I'll try to make a PR but not sure when as I need to figure project setup here first :D

[mathav95raj]

Hi all, wil there be an update on including llama-gemma3-cli in the application since it enables vision support in Gemma 3 as per ggml-org/llama.cpp#12344