Add additional http methods

[Jayx239]

Is your feature request related to a problem? Please describe. A clear and concise description of what the problem is. Ex. I'm always frustrated when [...] No problem, just want BrowseSharp to be more extensive Describe the solution you'd like A clear and concise description of what you want to happen. Add standard http methods to make BrowseSharp more robust. Add methods from here: https://developer.mozilla.org/en-US/docs/Web/HTTP/Methods Describe alternatives you've considered A clear and concise description of any alternative solutions or features you've considered. N/A Additional context Add any other context or screenshots about the feature request here.

[Jayx239]

May be good to update RestSharp to support this prior to implementing in BrowseSharp.