Events on ContractAbstraction

[psmolinsky]

Is your feature request related to a problem and use case? Please describe.

Please provide metadata about possible events that a contract can emit on ContractAbstraction. It is needed when a user wants to know all events upfront, before waiting for them to be emitted. It is especially useful for indexers.

Describe the solution you'd like

• Provide event's tag, its schema(s) and maybe also entrypoint(s) that can emit it.
• Something similar to entrypoints property.

Additional context

Tezos docs

OUT OF SCOPE:

• Our abstraction will only follow 1 level of smart contract events abstraction, even if there are contract dependencies where one contract with events calls another contract with events.

[dsawali]

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