Add maximum depth option to all function to limit how deep to apply formatting

[mcdowell7]

Is your feature request related to a problem? Please describe.
I want to only affect the top level keys, any keys at a depth greater than one carry meaning and I don't want to modify them

Describe the solution you'd like
Ability to specify the max_depth of the recursion?

Describe alternatives you've considered
None

Additional context
None