Release tracking issue: Distributions and staking.

[erwanor]

High-level milestones:

This is a WIP. I will edit the ticket as I go.

1. Layout the groundwork for a robust staking component

• #2921
• #1480
• #1481
• #3398
• #2919
• #3661
• #1480
• [x] #3456
• [x] staking: use Amount for token quantities
• [x] #3615
• [x] #3683

2. Distribution and funding components facilitate protocol management of rewards

• #3663
• [x] #3682

3. Staking token issuance is dynamic and decided by the distributions component

• #1934
• #3409
• #3413
• #3415
• #3633

4. Staking token issuance is dynamic, and based on a YoY inflation target (to be fleshed out)

• [ ] staking: track epoch durations
• [ ] staking: add chain parameters for time-based issuance
• [ ] staking: track percentage of bonded stake
• [ ] staking: implement issuance controller
• [ ] #3668