Split out consumer genesis state

[shaspitz]

Problem

#1071 has illuminated that the provider module references the consumer genesis type. See shared_consumer.proto. Note also that a lot of the fields in the consumer's genesis state struct are zeroed out when that genesis state is queried from provider.

We should create a new struct which holds the info that a consumer actually needs from the provider (ie. no extraneous zeroed fields), this type will trivially be shared between consumer and provider. Then the consumer genesis state (only referenced by consumer) can have a field for the shared type. This allows us to make types like HeightToValsetUpdateID, OutstandingDowntime only relevant to the consumer.

Closing criteria

Make changes as described

Problem details

[maharsh312]

i'll like to work on this, can you assign it to me?

[mpoke]

@maharsh312 I assigned it to you. Thanks for working on this. Please let us know if you need help.

[mpoke]

@maharsh312 Could you please confirm that you're working on this issue? Do you have an ETA?