Storage slot for sub-accounts

[gabririgo]

Summary

Allocate a storage slot to sub-accounts.

Motivation

While using a smart contract for interacting with DeFi in a safe way as Rigoblock does is a very effective way of running onchain discretionary token allocation strategies, more complex strategies will require the segregation of tokens. This is particularly relevant for programmatic market makers/traders to limit the risk of their strategies to just portions of their portfolio. Furthermore, this allows keeping the allowance set to one/many DeFi applications / DEXes for maker order strategies, while at the same time having those approvals automatically revoked on the core wallet.

Specification

• allocating a deterministic storage slot to an indexed mapping of sub-accounts
• allocating a deterministic storage slot to the number of sub-accounts
• implement owner methods to activate close approve for each sub-account
• upgrade pool implementation (requires onchain governance vote)

Notes

This is a very low-priority improvement.