Compatibility with latest Palworld REST Updates & Improvements

Palworld RESTSharp Proxy Service

• Added compatibility for users to update their own passwords.
• Added new audit events for user creations, edits, deletions.
• Upgraded target framework to .NET 9.

Palworld RESTSharp Client Library

• Upgraded target framework to .NET 9.
• Updated to support the new World GUID and player building count provided by the Palworld REST API.

Palworld RESTSharp Client GUI

• Upgraded target framework to .NET 9.
• User audit page will now load the table automatically.
• Added "Change Password" button for proxy users.
• Configuration settings are now stored in the registry on a user-level.
• Minor bugfixes.