feat: Reintroduce LaxRedirectStrategy in HttpClient 5.4 for Enhanced Redirect Handling

[otavioprado]

This commit adds a new implementation of the LaxRedirectStrategy, bringing back functionality similar to that found in HttpClient 4.x. The LaxRedirectStrategy automatically redirects all HEAD, GET, POST, and DELETE requests, relaxing the restrictions imposed by the HTTP specification on automatic redirection of POST methods.

Key Features:

• Supported Methods: Redirects HEAD, GET, POST, and DELETE methods.
• Location Resolution: Automatically resolves relative redirect URIs against the request URI.
• Compatibility: Ensures compatibility with existing 4.x applications by providing a familiar API and redirect behavior.
• Normalization: Normalizes and converts the host part of the redirect URI to lowercase, maintaining consistent behavior.

Benefits:

• Simplifies migration from HttpClient 4.x to 5.x by providing a drop-in replacement for LaxRedirectStrategy.
• Supports applications that rely on flexible redirect behavior for non-idempotent HTTP methods.

Usage:

CloseableHttpClient httpClient = HttpClients.custom()
    .setRedirectStrategy(LaxRedirectStrategy.INSTANCE)
    .build();

I have reopened this pull request based on the feedback provided by @ok2c. Below are the changes made to address the comments:

Changed Target Branch:

• The target branch has been changed from the stable branch to the master (5.4) branch, as new features should not be added to stable branches.

Updated since Tag:

• The since tag has been updated to 5.4 to reflect the correct version for this feature.

Adjusted Test Method Visibility:

• Test methods now have package visibility to maintain consistency with existing test cases.
  Thank you for the feedback, and please let me know if there are any further changes required!