* proxmox: Refactor
This is a squash of the following commits for easier rebasing:
proxmox module_utils: make use of choose_first_if_multiple in get_vm
proxmox: refactor module
proxmox: add changelog
proxmox: fix deprecation message
proxmox: remove type hints
proxmox: remove spaces for keywords
proxmox: run formatter
proxmox: make compabtible with old python versions
proxmox: remove f-strings
proxmox: fix string formatting in build_volume
proxmox: revert disk size parameter to simple integer
proxmox: update changelog fragment
proxmox: fix argument spec
proxmox: fix size handling in build_volume
proxmox: fix formatting
proxmox: update changelog fragment
* proxmox: Fix changelog fragment, doc, and deprecation string formatting.
* proxmox: Fix formatting in imports
* proxmox: require one of `vmid` or `hostname`, simplify checks
* proxmox: apply check for supported features to entire module
* proxmox: move parameter conversions inside create and update functions
JL Euler