fix: support generic NUT-17 quote kinds

[callebtc]

Summary

• switch advertised and wallet-used NUT-17 quote commands to the new generic mint_quote and melt_quote strings from Simplify NUT-17 subscription kinds nuts#372
• keep mint-side backwards compatibility for the legacy method-specific quote kind strings and mark the temporary compatibility paths as deprecated/TODO cleanup points
• fan out mint events to both generic and legacy quote topics so old websocket clients keep working while new wallets subscribe with the generic kinds

Testing

• cargo test -p cashu nut17::tests --lib
• cargo check -p cdk-common -p cdk --lib --no-default-features --features wallet
• cargo check -p cdk-ffi --no-default-features --features bip353
• cargo test -p cdk --lib --no-default-features --features wallet subscription::tests

Notes

• cargo check -p cdk-axum / mint-feature verification is blocked in this environment because cdk-signatory requires a local protoc binary during build.