command-r+phi prompt templates

[WolframRavenwolf]

Added prompt templates for Command-R and Phi models.

(By the way, Command-R+ works really well with RAG and function calling, perfect for Home Assistant integration!)

When merged, this will resolve at least a part of #139

[acon96]

The zephyr3 prompt format (shows up as Zephyr (<|end|>) in the UI) is supposed to be what the Phi-3 instruct models use. Can you remove the phi-3 format from this PR? The newline difference between the two is added by another function

The Command-R one is a good addition, thanks for that.

[WolframRavenwolf]

OK, done.