* fix for unsupport zes API
* optimize the code
* adjust the log level
* rm unused head files
* Update docs/backend/SYCL.md
Co-authored-by: Titaniumtown <titaniumtown@proton.me>
* fix the error to detect level zero SDK/dev package, stop build after detect the error
* update the message
* fix the build error when missed to install level zero dev package
* rm GGML_SYCL_DEV_DEBUG, mv read env vars in all entry functions
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Co-authored-by: Neo Zhang Jianyu <jianyu.zhang@intel.com>
Co-authored-by: Titaniumtown <titaniumtown@proton.me>
Co-authored-by: Neo Zhang <NA>
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