Modular crypto service

[joyqvq]

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[joyqvq]

On a high level the tasks falls under:

1. User Keystore

• Remove signer from AccountKeyStore crypto: simplify keystore sui#4828
• Use Keystore enum_dispatch instead of a boxed dynamic trait [2/n] crypto: simplify keystore sui#4909
• Always invoke signing with Signature::new (there are few places we use try_sign, and this can be missed during migration) crypto: use one place to sign in test sui#5033
• Add intent signing under Signature::new_secure crypto: add intent signing struct sui#3687
• Switch Typescript sdk to Signature::new_secure
• Switch Rust sdk to Signature::new_secure
• Expose get_chain_id endpoint in API (wallet can store this and use when it signs)
• Migrate sui-sdk crypto.rs and sui-types crypto.rs key related handling to a new crate sui-keys
• Snapshot test for Sui client config Add snapshot test for SuiClientConfig sui#4977
• Stretch goal: use AccountKeystore trait with Ledger's rust-sdk

2. Validator Keystore

• Switch AuthoritySignature AuthoritySignature::new_secure
• TODO

cc @kchalkias @patrickkuo for some upcoming PR review contexts