Implements ICryptoService for encrypting login credentials using RSA-OAEP.
Uses JavaScript interop with browser's native SubtleCrypto API instead of
Blazor.SubtleCrypto package (which only supports AES-GCM, not RSA-OAEP).
- ICryptoService interface in JdeScoping.Client.Services namespace
- CryptoService fetches server's public key once, caches it
- interop.js rsaEncrypt function for RSA-OAEP encryption via Web Crypto API