Improve predeployed contract upgrading mechanism

[DmytroNazarenko]

OKR: Q2 2023

Currently predeployed upgrade mechanism needs a lot of interaction and executing a lot of manual commands by chain owner. We need to automate our predeployed upgrading pipeline to minimize interactions with chain owners.

Possible solution is to create a smart contract on mainnet to manage upgrades on all skale-schains. The contract will interact with skale-manager and then will send upgrade commands throw IMA for all SKALE chains.

• Create PRD for upgrade pipeline

Tasks

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1. Prepare instructions for upgrade #188
   documentation +1
   

[DmytroNazarenko]

Important Q: Can we have a full control of predeployeds upgrade? @kladkogex @payvint

Solution A. Centralized contract upgrade:
same versions of contracts +
easy upgrade procedure +
upgrade responsibilities -

Solution B.
Deploy implementations + generate transactions for upgrade.

1. Add our key to owner multisigs
2. Ask all multisigs create a delegator certificate for add transactions
3. Connect GnosisSafe to Admin UI (with WalletConnect)
4. SafeApp

@DimaStebaev to add more info

[DimaStebaev]

I also consider a good idea for option B to create a portal which contains information about versions of all smart contracts on all SKALE chains. It simplifies our life in nearest future and could become an entry point for further automated or semi-automated solution.

[DmytroNazarenko]

per @kladkogex - solution should be decentralized
per @DimaStebaev - using current upgrade-scripts and write readable instructions for it, then @EvgeniyZZ to review it

[DmytroNazarenko]

Solution proposal: #188