add pfm

[asalzmann]

closes #800

Summary
Adds PFM by following the integration guide: https://github.com/cosmos/ibc-apps/blob/main/middleware/packet-forward-middleware/docs/integration.md

Tracking a few integration issues with the PFM team:
cosmos/ibc-apps#146

I asked about these discrepancies on the issue (waiting on a response from Reece) for 1/2

• Why is app.GetSubspace in the integration docs but not the code?
• Why is the authority not in the integration docs but in the code?
• Should we import app.PacketForwardKeeper in app.TransferKeeper? => Not required, just pass nil

[github-actions]

This pull request has been automatically marked as stale because it has not had any recent activity. It will be closed if no further activity occurs. Thank you!

[SecretSaturn]

hey @asalzmann,

Stride's UX would really profit a lot from having PFM enabled.
We at Secret network would like to bridge in a lot of stride assets directly from osmosis and PFM would ease the UX quite a lot! :)

[asalzmann]

@sampocs are you signed off on this PR?

Is the main outstanding task to review interaction between autopilot / PFM?

[sampocs]

I’m signed off on all the comments, but remaining tasks are:

• think about the interaction between autopilot snd pfm
• test it in dockernet if you havent already
• fix whatever the build error is that’s causing CI to fail

[asalzmann]

• think about the interaction between autopilot snd pfm
• test it in dockernet if you havent already
• fix whatever the build error is that’s causing CI to fail