[AddToken] `cUSD` to `MAINNET`

### Network

MAINNET

### Token Symbol

cUSD

### Token Name

cap USD

### Decimals

18

### Address

0xcCcc62962d17b8914c62D74FfB843d73B2a3cccC

### Image URL

https://cap.app/media-kit/cUSD_ab_32x32.svg

### Reason

This is now has solvers to mint cUSD. Alex asked to submit this PR. 