Investigate feasibility of multisig ownership

[tkporter]

https://github.com/FuelLabs/sway-applications/tree/master/multisig-wallet exists but apparently doesn't have full support according to https://discord.com/channels/732892373507375164/734213700835082330/1089884415104122880

We should:

• Evaluate our options for contract ownership and whether it's wise to use a multisig as an owner