proto annotations for identifying entity ID

[zenyui]

Is your feature request related to a problem? Please describe.
we deprecated the feature to invoke sendcommand and automatically identify the entity ID. we should add it back.

Describe the solution you'd like
a well-known annotation (or configuration) that allows lagom-pb to infer the entity ID based on the field descriptor / message.

Describe alternatives you've considered
n/a

Additional context
n/a

[zenyui]

let's eject his from v1.0 until we have better examples. until then, i'd rather just use annotations for validations.

[Tochemey]

let's eject his from v1.0 until we have better examples. until then, i'd rather just use annotations for validations.

It does make sense