added CapSolver feature Anchor/Reload

[infiniteloopltd]

As per the documentation here: https://www.capsolver.com/blog/reCAPTCHA/How-to-bypass-all-the-versions-reCAPTCHA-v2-v3

Using the properties "Anchor" and "Reload" in the CapSolver Google reCAPTCHA v3 request increases the quality score of the solution. Tested and verified to provide a 2x increase in quality score (estimate)

Set as follows;

var captchaService = new CapSolverService("CAP-xxxxxx", null);
captchaService.Anchor = ....;
captchaService.Reload = ....;