add suggestions for certain creators

git's CLI gives helpful suggestions for non existent commands.

Some examples:

1. expr functions. If someone types [fmod] the error could add did you mean "expr fmod($f1, x)" where x is the argument they supplied. Same for all the expr functions that don't have a creator.
2. a selection of common max/msp classes. E.g., did you mean "osc~" for "cycle~".

Also:

• warning for numbers and lists inside object boxes. E.g., for [1] give warning: did you mean "[float 1]"?

That would improve the UX without adding much text to errors.

The actual text of the message is just an example and could be tweaked.

If some external lib adds a creator for any of these then of course that would supercede the error so that shouldn't be a problem.