Change BIP 44 Derivation Path to Miden Specific Path

Not sure of the urgency of this, but currently we're using `m/44/0...` as the derivation path for wallet addresses for the miden wallet. I think the proper way to do this would be to register Miden as a coin type [here ](https://github.com/satoshilabs/slips/blob/master/slip-0044.md) by submitting a PR. Then, we would update our path in the wallet.

The point of this is that if a user created an account with the Miden wallet, but later wanted to also display that account in a different wallet that supports BIP 44, this unique derivation path would allow other wallet companies to be able to import Miden wallets from seed.

Writing this down mainly for discussion as I do foresee once encrypted state comes along that it would be difficult for other wallets to fully incorporate Miden functionality, but we should still consider this in the ideal scenario where everyone understands the power of privacy-focused wallets and wants to start incorporating the technology into their own wallets.