add authentication, selfsigned cert,proxy support

[bli111]

Here’s a clear and concise description for your PR submission to the Gemirro project:

PR Title: Enhancements for Upstream Authentication and Internal Proxy Support

Description:
This pull request introduces several enhancements to improve Gemirro's flexibility and security when interfacing with both external and internal repositories. Key features include:

1. Username/Password Authentication for Upstream Repositories: Adds the ability for Gemirro to support username and password authentication when accessing upstream repositories that require it. This feature ensures secure access to protected resources.

2. Proxy Server Support with Self-Signed Certificates: Implements support for hosting repositories internally using a proxy server that may use self-signed certificates. This enhancement is crucial for environments where internal security protocols require the use of custom certificates.

3. Forced Basic Authentication: Allows users to enforce basic authentication when interacting with upstream servers that require it, providing an additional layer of security and control.

These updates are designed to make Gemirro more adaptable to various network and security configurations, enhancing its utility in a broader range of deployment scenarios.

[PierreRambaud]

Thanks a lot and sorry for the delay, didn't see the notification 😅
Haven't tested it but from what I read, it should be ok, I release a new version of gemirro.