Add interface to allow user provided extensions

[yogeshbdeshpande]

Problem Statement:

Present Implementation of Base CoRIM and CoMID has PSA specific types embedded into the base types.
One example is the Environment Type which has a Class Identifier object inside it.
One type of Class Identifier is the PSA Specific Implementation ID, which is PSA specific.
The issue it raises it:

1. Now any external library user uses the Class ID object will get the PSA specific Implementation ID as part of
   the library implementation, which is not required.

2. Any new user of CoRIM, CoMID library, if they have their own ID types, will eventually pollute the library with their own types.

Solution

1. Create Generic Objects (like Class types) which has ONLY the base types (like OID and UUID).
2. Provide mechanism for adding dynamic types from the caller with API's for:

a. Registration
b. Validator
c. Getter and Setter.
d. JSON and CBOR encoder and decoder

Additional context

None

[yogeshbdeshpande]

Closing this as, now addressed using:

#96