Restore clip's cb() to its rightful glory - extract common debugging elements in...

Restore clip's cb() to its rightful glory - extract common debugging elements in llama (#17914)

* Extract common debugging functions; plug eval-callback and mtmd's MTMD_DEBUG_GRAPH with same functionality

* Move to common

* Remove unneeded header

* Unlink from common

* chore: update webui build output

* Cleanup; properly pass params to mtmd without depending on common; factorize debug.cpp to use common debug code.

* Revert change to webapp

* Post-merge adjust

* Apply suggestions from code review

Co-authored-by: Xuan-Son Nguyen <redacted>
* Apply code review changes

* Remove changes to server-context

* Remove mtmd.h include

* Remove utility functions from header

* Apply suggestions from code review

Co-authored-by: Xuan-Son Nguyen <redacted>
* Rename functions

* Update tools/mtmd/clip.cpp

Co-authored-by: Xuan-Son Nguyen <redacted>
* Update tools/mtmd/clip.cpp

Co-authored-by: Xuan-Son Nguyen <redacted>
* Update tools/mtmd/clip.cpp

Co-authored-by: Xuan-Son Nguyen <redacted>
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Co-authored-by: Xuan-Son Nguyen <redacted>