[GIP-267]: Activate Gearbox instance on three prospective networks

## Authors lekho.eth ## Summary This GIP proposes activating Gearbox instance on three prospective networks: Monad, Nibiru and Somnia. ## Details It is proposed to activate Gearbox instance on three networks (Monad, Nibiru, Somnia) with the following parameters: | Network | Chain ID | `instanceOwner` | `treasury` | `weth` | |---------|----------|----------------------------------------------|----------------------------------------------|----------------------------------------------| | Monad...