feature/website support for /latest/ and /absolute-latest/ redirection

[rclabo]

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Summary of the changes (Less than 80 chars)
Website /latest/ using .htaccess rewrite rules

Description

I don't think there is an issue for this one but it's a feature we have been wanting for a while.

This pull request introduces a new URL redirection feature for the Lucene.NET website. It sets up two redirects into the API documentation using .htaccess rewrite rules. The implementation adds two useful URL paths:
• /doc/latest/: Redirects users to the API documentation for the most recent officially released version of Lucene.NET.
• /doc/absolute-latest/: Directs users to the absolute latest version of the API documentation, which may include pre-release versions.
These redirects allow the main website to link to the API documentation dynamically, without hardcoding the version number in the URLs, ensuring that users are always directed to the correct version of the documentation even as we provide new version of Lucene.NET and its accompanying API documentation.