cli: new CLI experience (#17824)
* wip
* wip
* fix logging, add display info
* handle commands
* add args
* wip
* move old cli to llama-completion
* rm deprecation notice
* move server to a shared library
* move ci to llama-completion
* add loading animation
* add --show-timings arg
* add /read command, improve LOG_ERR
* add args for speculative decoding, enable show timings by default
* add arg --image and --audio
* fix windows build
* support reasoning_content
* fix llama2c workflow
* color default is auto
* fix merge conflicts
* properly fix color problem
Co-authored-by: bandoti <bandoti@users.noreply.github.com>
* better loading spinner
* make sure to clean color on force-exit
* also clear input files on "/clear"
* simplify common_log_flush
* add warning in mtmd-cli
* implement console writter
* fix data race
* add attribute
* fix llama-completion and mtmd-cli
* add some notes about console::log
* fix compilation
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Co-authored-by: bandoti <bandoti@users.noreply.github.com>
