feat(ui): prompt for chat, support vision, enhancements (#2259)

* feat(ui): allow to set system prompt for chat

Make also the models in the index clickable, and display as table

Fixes #2257

Signed-off-by: Ettore Di Giacinto <mudler@localai.io>

* feat(vision): support also png with base64 input

Signed-off-by: Ettore Di Giacinto <mudler@localai.io>

* feat(ui): support vision and upload of files

Signed-off-by: Ettore Di Giacinto <mudler@localai.io>

* display the processed image

Signed-off-by: Ettore Di Giacinto <mudler@localai.io>

* make trust remote code stand out

Signed-off-by: mudler <mudler@localai.io>

* feat(ui): track in progress job across index/model gallery

Signed-off-by: mudler <mudler@localai.io>

* minor fixups

Signed-off-by: mudler <mudler@localai.io>

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Signed-off-by: Ettore Di Giacinto <mudler@localai.io>
Signed-off-by: mudler <mudler@localai.io>