Enable ICA controller

[mpoke]

Summary

With the Gaia upgrade to SDK 0.47 and IBC 7, we can enable the ICA controller on the Cosmos Hub.

Problem Definition

The ICA controller would enable the Hub to control accounts on remote chains. An example of an application is the provider-based governance that would allow the governance of a consumer chain to be control by ATOM stakers. See the IBC docs for more details.

Proposal

A prerequisite is upgrading the Hub to IBC 7, which will happen with the v15 upgrade.

Task list

### Must have
- [ ] align with stakeholders on potential use cases (e.g., Neutron)
- [ ] https://github.com/cosmos/gaia/issues/2539
- [ ] https://github.com/cosmos/gaia/issues/2979

### Nice to have

---

For Admin Use

• [x] Not duplicate issue
• [x] Appropriate labels applied
• [ ] Appropriate contributors tagged
• [ ] Contributor assigned/self-assigned
• [ ] Is a spike necessary to map out how the issue should be approached?

[MSalopek]

Pre-requisite was achieved with https://github.com/cosmos/gaia/releases/tag/v15.0.0.

When tackling this issue, we should split it into smaller steps:

1. enable the basic ICA controller
2. connect ICA to governance (allow the Hub governance to control accounts on other chains)