[loading/saving] Reverse all loading operations when saving (#42396)
* first shot
* default to reversing
* oupso
* oupsi 2
* oupsi 3
* fix renamed kwargs
* fix timm_wrapper
* remove fix_state_dict methods
* can do it all the time, with __init__ as well
* doc
* oupsi
* fix
* create helper
* fix annotation annoying isue
* small fix
* small fixes
* alright commit all that already
* oupsi
* the fix
* update quantizers
* this works
* the hardcoded regex got me hard....
* style
* the final one
* cleanup a bit
* better
* style
* oupsi readded it
* do it inside the ops instead - no need for full names anymore
* reverse quantizers and simplify signatures
* small thingy
* add no_grad decorator
* utils to rename keys
* oupssii again
* add test
* simplify nicely