[App Lab integration] List the available images

[MatteoPologruto]

It should be the equivalent of arduino-flasher-cli list. The goal is to return an ordered list (latest release always at index 0), and the objects could be similar to this example:

{
	ID:           "20251123-159",
	VersionLabel: "r159 (2025-11-23)",
	Latest:       true,
}