[schema] Add few schema definitions for different type of tokens

[amarts]

It is important to have a standard way of defining the tokens, and their category so the broader classifications of what are the actions possible on the particular token, which states can be used for tokenized asset, etc etc can be clearly defined for the eco-system.

This serves as a major glue in the interoperability of multiple infrastructure and application players.

For this task, add below:

• Add a "Regulated Money" as tokenized asset and define the schema for the same (fungible token).
• Add a sample "Land" Tokenization schema (non-fungible asset/token)
• Add a sample schema for "art" (self-attested/self-tokenized asset).