Resolve imported symbol names from kernelcache for reverse engineering.
Scans all fileset entries to build a symbol map, then injects resolved
addresses as N_ABS|N_EXT symbols into extracted KEXTs. (closes#182)
- Add --imports to resolve undefined symbols from kernelcache
- Add --force to overwrite existing files
- Add -o shorthand for --output
- Fix os.Stat error handling (propagate real errors, not just skip)
- Fix typo: "KEXT-xtraction" → "KEXT extraction"
- Update kernel extract guide with --imports example