feat(sdk): add experimental networks

[PierreJeanjacquot]

• Added allowExperimentalNetworks option (default false) to IExecDataProtector's constructor and getWeb3Provider(). When allowExperimentalNetworks: true providers connected to experimental networks can be used
• Added arbitrum-sepolia-testnet as an experimental network

[SeddikBellamine]

Good job, LGTM! the constructor tests are great but the other tests are passing because we run them on bellecour, shouldn't we consider in the future adding a test stack for the network that has been added and execute tests on all the existing networks configurations with wallets that have fake funds in them to simulate real transactions ?
it's there that we might find some new kind or errors related to the chain and txs fees

[PierreJeanjacquot]

Good job, LGTM! the constructor tests are great but the other tests are passing because we run them on bellecour, shouldn't we consider in the future adding a test stack for the network that has been added and execute tests on all the existing networks configurations with wallets that have fake funds in them to simulate real transactions ? it's there that we might find some new kind or errors related to the chain and txs fees

arbitrum-sepolia-testnet is experimental and may be removed anytime soon, so I don't think it is worth it on this network, but we may want to reconsider the question for non-experimental networks.