Fixes for bnb and more apis in mistralrs-quant (#972) #4304

Job	Run time
Check (ubuntu-latest, stable)	1m 36s
Rustfmt	6s
Test Suite (ubuntu-latest, stable)	5m 13s
Check (windows-latest, stable)	5m 14s
Clippy	2m 2s
Test Suite (windows-latest, stable)	11m 23s
Check (macOS-latest, stable)	1m 56s
Docs	2m 43s
Test Suite (macOS-latest, stable)	3m 19s
Typos	5s
	33m 37s

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