bakar: the wrapper Yocto teams keep writing by hand

Every embedded team ends up writing the same Makefile around kas and repo. bakar replaces it: pre-flight checks before the build starts, curated build tuning applied at run time without touching your YAML, structured per-run observability, vendor manifest translation for NXP and TI BSPs, and bitbake-setup workspace support for Yocto 5.3+ projects. Builds run in a kas-container when…