Add DataDome captcha support to CaptchaSolver plugin

[kent13n]

Features:

• Add DataDomeVendor implementing ICaptchaVendor interface
• Support for slider, interstitial, and device check captcha types
• Network interception to capture dynamic parameters (cid, hash, t, s)
• Automatic page reload after cookie injection
• Browser User-Agent extraction for solving service compatibility

Proxy support (required for DataDome):

• Add ProxySessionId for sticky IP sessions
• Add proxy configuration options (ProxyType, ProxyAddress, ProxyPort, ProxyLogin, ProxyPassword)
• Session ID appended to proxy login for DataImpulse format (user;sessid.{id})

Provider updates:

• CapSolver: Add DataDomeSliderTask support with proxy string format
• TwoCaptcha: Add DataDomeSliderTask support with separate proxy fields

Tests:

• Add DataDomeTests with detection and solving tests
• Tests require proxy configuration in Resources for solving