[Feature Request]: Add support for uTLS, ECH, and Reality Advanced Settings (Extra / Final Mask)

[tarus1990]

Description

I would like to request UI and config parser support for the latest Xray-core features, specifically focusing on advanced DPI circumvention tools: uTLS, ECH, and the newly restructured global finalmask object.

With recent updates to Xray-core, features like TCP fragmentation, UDP noise, and the new header-custom protocol masquerading have been unified under a global transport-level finalmask object. This is no longer exclusive to Reality and can be applied to other transport/proxy configurations (e.g., VMess/Shadowsocks over raw TCP/UDP).

Please consider adding support for these configurations in the GUI client.

Key Features to Support

1. uTLS (TLS Fingerprint): Dropdown menu to select TLS handshakes (chrome, firefox, safari, randomized).
2. ECH (Encrypted Client Hello): Fields to enable and pass ECH configurations within streamSettings.tlsSettings.
3. Global finalmask Object: - Support parsing and editing the new finalmask schema inside the global stream/transport settings.
   • This includes sub-parameters for tcp (header-custom, fragment) and udp (noise, custom prefixes).

Expected UI / UX Behavior

• Import/Export Parser: The application should correctly parse these arguments when importing proxy configuration links (such as vless://, vmess://) containing the new finalmask or uTLS query parameters.
• Advanced Stream Settings: Add a dedicated "Advanced Transport / Finalmask" section in the node configuration window (accessible regardless of whether Reality is active or not).

Technical Reference (Xray-core Schema)

The new configuration maps to the stream settings layer:

• streamSettings.tlsSettings.fingerprint (uTLS)
• streamSettings.tlsSettings.echSettings (ECH)
• streamSettings.finalmask (Unified object for TCP header-custom/fragment and UDP noise)

Thank you for keeping this GUI client up-to-date with the latest network obfuscation standards!