Support alias for the Schema and Message

[abhilashmandaliya]

Schema and message should support different names/alias while performing SerDe. Like ObjectMapper has @JsonAlias and @JsonProperty. Probably we can use the same feature as Pulsar Schemas use ObjectMapper internally.

[eolivelli]

I see your problem.

but we have to find some way in order to abstract from Jackson Mapper because relying on Jackson Mapper will add an hard dependency for Pulsar.

in the case of Avro it is fine to support their annotations because we are supporting Apache Avro.

but in this case Pulsar supports JSON in general and not Jackson Mapper, that is a specific library.

[codelipenghui]

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