[FR] Have a repository of "supported" transaction types (different metadata models)

[rcmorano]

Something like this [0] that easily enables users to attach known JSON object types to transactions.

[0]

[nothingalike]

Section Name: MetaBuilder

Start with a few supported Schemas from Schema.org
Lets go ahead and Seed/Register these schemas on chain. (Maybe just the base 'Thing' schema)
We can always add what we support by default in the future, but this will help us understand the how to handle registered types on the app.

If a user wants to build a schema, they can construct what the schema is and 'register' the schema on the chain. We return them the transaction(*)

During send transaction, the user will need to enter a transaction id of the registered schema. we then create form of said schema for them to enter values.

*currently hard to return transaction id