Enabling object skirt.

[vovodroid]

Implements individual object skirts, as requested in Individual skirts when printing by object. #3486 and Skirt around each object when using "by object" sequence #2652

Now skirt type could be

This PR based on several refactorings, including Configure skirt start point #6490 PR. To make review more easy each step was committed individually. Obviously them could be separated to different PRs or dropped.

I removed prime_extruder && first_layer && extruder_id == first_extruder_id as explicit object skirt is available.

Open question : do we need both common and object skirt together, probably with separate loop number?

All four combinations are possible.

Print by layer, common skirt:

Print by layer, object skirt:

Print by object , object skirt:

Print by object , common skirt (any meaning?):

[vovodroid]

@igiannakas , would you like to test this?

[igiannakas]

Will do, no problem! From Tuesday though as I’m away from home for a few days :)

[SoftFever]

Love the idea!
Will review and test it soon

[SoftFever]

Looks all good to me.
Just got a suggestion, can we name the options of the skirt type to: Combined and Per-object for clarity?

[vovodroid]

Renamed:

[SoftFever]

Looks good
Thank you!