NestedStruct - Represent a nested struct

This is a class that will let you display values of all substructs of a struct.

Example:

nestedStruct = struct(...
    'Subject', struct('Age', 25, 'Species', 'Mouse'), ...
    'Experiment', struct('Date', '2023-01-01', 'Location', 'Lab') );
      
s = NestedStruct(nestedStruct);

>> s

s = 

  NestedStruct with properties:

   Subject:
         Age: 25
     Species: 'Mouse'

   Experiment:
        Date: '2023-01-01'
    Location: 'Lab'

Ideas:

• Better display for struct with mix of substructs and values which are not struct
• Support for multiple nesting levels (if possible?)