move `types` back from `internal` to `proxmox` and adjust a few other types, to make sure `proxmox` package is not dependent on anything else, and therefore can be extracted to a separate repo (#423)
* cleanup 1
* continue refactoring
* more refactoring
* move VMs under nodes
* move container and other apis under nodes
* cleanups
* enabled revive.exported linter & add comments to exported stuff
* enable godot linter
* enable wsl linter
* enable thelper linter
* enable govet linter
* cleanup after rebase
* cleanup after rebase
* extract SSH ops into a separate interface
* fix linter error
* move ssh code to its own package
* cleaning up VirtualEnvironmentClient receivers
* on the finish line
* not sure what else I forgot... 🤔
* fix ssh connection and upload
* renaming client interfaces
* final cleanups