Negotiate authentication
Adds support for most of the Negotiate and NTLM authentication mechanisms. No current support for Channel Binding Tokens, since it is currently not possible to access the httpx SSLSocketContext via supported means.
PR has been tested with IIS on Windows 10, but should be considered alpha, it has not been tested on any linux distributions.
PR includes unit tests for helper functions, but does not currently include any end-to-end tests, it should be possible to deploy a KDC and protected server in a container, but I have not implemented that so far.
Kudos, SonarCloud Quality Gate passed! 
0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells
No Coverage information
0.0% Duplication
SonarCloud Quality Gate failed. 
0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells
No Coverage information
6.7% Duplication