Add Ultragreen functions to celocli

[martinvol]

Functions should support:

• handle(address tokenAddress)
• handleAll()
• distribute(address tokenAddress)
• distributeAll()

As described in the CIP: https://github.com/celo-org/celo-proposals/blob/master/CIPs/cip-0052.md

### Tasks
- [x] Expose functions in contract kit
- [x] Integrate to celo cli
- [ ] Add unit tests.

[arthurgousset]

Related pull requests:

• https://github.com/celo-org/celo-monorepo/pull/10524
• https://github.com/celo-org/celo-monorepo/pull/10403

[arthurgousset]

(for context) The ultragreen smart contract is going live on Mainnet with the ginger hardfork.

[arthurgousset]

Some additional context from @martinvol:

• UltraGreen contract is deployed and will accumulate fees after the hardfork
• first exchange will happen after it gets enabled, in a separate governance proposal
• At the moment there’s no rush to actually publish the CLI with the update

I still propose we get to work on this, so it's out of the way, but the prioritisation doesn't have to do with the Gingerbread hardfork tomorrow (Tue, Sep 26).