#1344 Server: Multiple API key(llamacpp format) will seen as one long key

Description

Launch command: .\START-HERE.bat --no-browser --host 0.0.0.0 --api-key sk-<<48char key1>>,sk-<<48char key2>>
The result api key will be joining 2 keys together. "sk-<<48char key1>>,sk-<<48char key2>>"

This imply a, the server doesn't check the key format, I'm not sure is it by design to support various key format
b, it can't parse comma-separated list of keys.