Gamm proto migration

[mattverse]

Background

https://github.com/osmosis-labs/osmosis/blob/main/proto/osmosis/gamm/v1beta1/balancerPool.proto#L2-L5

We had a todo on gamm proto migration, and needed extra investigation on whether we needed extra migration.

I have attempted to change the proto package with the following changes 4dbdce0 and ran an upgrade on in place testnet, getting the following error

Error: rpc error: code = Unknown desc = rpc error: code = Internal desc = no concrete type registered for type URL /osmosis.gamm.v1beta1.Pool against interface *types.CFMMPoolI: unknown request

We would need further investigation on how we should be conducting a migration on the proto package.

Suggested Design

Here, you can put concrete steps as to what to do next
e.g.

• create test file in...

Acceptance Criteria

Goals & criteria for success
e.g.

• all existing and new tests should pass