Added Jetson performance mode selector

A new Jetson performance mode selector has been added to the Web UI, enabling easy switching between GPU modes. The update also centralizes runtime config defaults and introduces AI model warmup for faster responses.

Added Jetson performance mode selectorEasy switching between different GPU modes is now available through the Web UI. Centralized runtime config defaultsAll config values are centralized for a more organized functionality. Added AI model warmupAll used models during a session are now warmed up from start for faster responses.