feat: added switch network hook

[YohanTz]

To be checked before this PR is merged:

• [ ] https://community.starknet.io/t/snip-standardizing-starknet-wallet-connections-with-write-api-and-json-rpc-integration/98049 validated
• [ ] Braavos implemented wallet_switchStarknetChain
• [ ] Demo page ready

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[github-actions[bot]]

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[github-actions[bot]]

This pull request has been automatically closed because it has not had any further activity in the last 2 weeks.