feat: add mina_requestAccounts provider method and return an empty ar…

[DeMonkeyCoder]

This PR is made to add mina_requestAccounts provider method and return an empty array in response to mina_accounts if the wallet is not connected.

I tried to make minimum changes to the code, but it's better if this is managed by a complete permission system in the wallet

[deepsource-io[bot]]

Here's the code health analysis summary for commits a814f80..291f345. View details on DeepSource ↗.

Analysis Summary

Analyzer	Status	Summary	Link
JavaScript	✅ Success	❗ 1 occurence introduced 🎯 1 occurence resolved	View Check ↗

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