Refactors Proxmox services to unify service type and storage logic

[aschumann-virtualcable]

This pull request introduces several improvements and refactors to the Proxmox service integration. The most significant changes are focused on updating type references for service classes, improving storage listing and filtering, and enhancing console connection functionality. There are also minor updates to copyright statements and some code cleanup.

Refactoring and Type Updates

• Updated type references throughout the Proxmox service code to use ProxmoxService instead of ProxmoxServiceLinked, including in deployment_linked.py and provider.py, and changed the offers list in ProxmoxProvider accordingly. [1] [2] [3] [4]
• Removed the unused import of UserServiceManager and the now-unused desktop_login method from deployment_linked.py, simplifying the codebase. [1] [2]

Storage Listing and Filtering Improvements

• Modified the storage listing logic in helpers.py to no longer skip certain storage types (lvm, iscsi, iscsidirect), allowing for more comprehensive storage selection.
• Enhanced the list_storages method in client.py to pass the Proxmox version to StorageInfo.from_dict, improving compatibility and filtering.

Console Connection Enhancements

• Added a get_console_connection method to deployment_fixed.py to provide console connection info via the service, improving remote access capabilities.

Validation and Initialization

• Added MAC range validation in the initialize method of ProxmoxProvider, ensuring proper configuration of provider settings.

Miscellaneous and Code Cleanup

• Updated copyright statements across multiple files to remove ".U." and standardize the legal text. [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17]
• Minor improvements to logging and code formatting, such as expanded debug logging in clone_vm and additional whitespace for readability. [1] [2] [3] [4] [5]