Add Basic Authentication Support to serilog-ui

[traien]

This pull request enhances the serilog-ui project by adding support for basic authentication, allowing users to secure their log viewer with a username and password. This feature is valuable for controlling access to the log viewer, ensuring that only authorized personnel can view and analyze logs.

Changes Made:

• Introduced a BasicAuthenticationFilter that can be configured to provide basic authentication for serilog-ui.

Usage:

To enable basic authentication for serilog-ui, developers can now use the BasicAuthenticationFilter by configuring it in their Startup.Configure method, as described in the README.

Testing:

Testing has been performed to verify the proper functioning of the basic authentication feature.

[mo-esmp]

@traien Thanks for the PR.
@followynne Do you think we can provide inputs in the UI (like JWT) to enter username and password instead of hardcoding in the code?

[mo-esmp]

@traien going to review and merge your PR tonight. Later, we will add UI for it

[followynne]

Hello @mo-esmp @traien

Sorry I don't have time to test the PR those days 😔
From a quick look it seems all good, my only suggestion / request would be to remove any README modification but put those in the correct wiki page (those wiki contribs are well accepted, thanks a lot for having written them!) 🙂

For the ui part, I agree on having them settable from there - noted down this change for the new one, it will be included 😁