feat: Added EFI boot support for various Proxmox templates

- Removed individual `.sh` files in favor of `proxmox_generic.sh` script
- Added EFI boot support with new variable `use_efi`
- Support added for EFI boot on multiple OS templates
- Added section `gpgkey` to Ansible playbook for GPG key installation

CHANGELOG.md

@@ -2,11 +2,15 @@
 
 ## Version 1.1.5
 
+* [BREAKING_CHANGE] - Removed indivudial `.sh` files in favor of `proxmox_generic.sh` script. This script is now used for all Proxmox templates. Detailed usage with all options can be found in the `README.md` file.
 * [FEATURE] - added EFI boot support for Proxmox. Every variable pack now has a new variable `use_efi` that can be set to `true` or `false`. If set to `true`, the template will be created with EFI boot support. If set to `false`, the template will be created with BIOS boot support. The default value is `false`.
   * [PROXMOX] - added support for EFI boot for `RockyLinux`
   * [PROXMOX] - added support for EFI boot for `AlmaLinux`
   * [PROXMOX] - added support for EFI boot for `OracleLinux`
   * [PROXMOX] - added support for EFI boot for `OpenSuse Leap`
+  * [PROXMOX] - added support for EFI boot for `Ubuntu`
+  * [PROXMOX] - added support for EFI boot for `Windows 2019`
+  * [PROXMOX] - added support for EFI boot for `Windows 2022`
 * [ANSIBLE] - added added section `gpgkey` to playbook, for easy GPG key installation before any repository operations are initiated. This is useful for systems that changed their GPG keys. The format is as follows:
 
   ```yaml