distrobox-assemble clone option

[PawsFunctions]

Is your feature request related to a problem? Please describe.
Currently, I am unable to clone an existing Distrobox when using the distrobox-assemble tool. While distrobox-assemble is useful for creating multiple Distroboxes, it does not allow cloning of an existing Distrobox in the same way the create command does.

Describe the solution you'd like
I would like the ability to clone an existing Distrobox when using the distrobox-assemble command. Specifically, the clone option should be passed to the create command, similar to the behavior of the create command by itself.

Describe alternatives you've considered
At this time, I have not found an alternative method to clone a Distrobox with the distrobox-assemble tool.

Additional context
It would be helpful to add a --clone flag to the distrobox-assemble command to support this feature. For reference, here is the distrobox-assemble image section in the code.

[PawsFunctions]

I was able to implement cloning with a few small additions to distrobox-assemble, and it worked as expected.

The changes are in this section of the code:

distrobox/distrobox-assemble

Line 48 in 18053c2

image=""

distrobox/distrobox-assemble

Line 274 in 18053c2

image=""

on lines 49 and 275 (276):

clone=""

distrobox/distrobox-assemble

Lines 342 to 344 in 18053c2

	if [ -n "${image}" ]; then
	result_command="${result_command} --image $(sanitize_variable "${image}")"
	fi

and on line 345 (347):

	if [ -n "${clone}" ]; then
		result_command="${result_command} --clone $(sanitize_variable "${clone}")"
	fi