Make quantizers good citizens loading-wise (#41138)
* fix param_needs_quantization
* rewrite most hqq
* clean
* fix
* comment
* remove it from exception of safetensors
* start on bnb 4bits
* post-rebase fix
* make bnb4 bit a good citizen
* remove forgotten print
* make bnb 8bits a good citizen
* better hqq
* fix
* clean
* remove state dict from signature
* switch method
* make torchao a good citizen
* fixes
* fix torchao
* add check
* typo
