[Feature]: Drawings conversion and management

[Celban]

Feature Request

MT is amazing for large scale dungeons. It's one of the strongpoints.
Despite Foundry's glamour, it can't handle large scale like MT so I still use it.

One dungeon I have is uber-mega. I mean stupid big because I want it that way. Retains a sense of scale I want.
I make drawings instead of dropping in assets because its easy to draw them, and light on resources that way.
There's the main Giant Hall,
then I have offshoot mini dungeons that are separate merged drawings on bg or hidden layers because regular assets are boggy.
Now my Dungeon evolves, needs editing.
I just want to move them as the editing requires instead of redrawing Whole Sections. so much time.
As it's grown, It's become too much to redraw all that over and over when I get an editing craze

The Solution you'd like

A while back someone mentioned #1 might be possible.
But, I'd like 3 things;

1. To convert A particular drawing to stamp asset or whatever object that can be moved
2. To convert that asset back into a drawing once moved because they seem to me to be lighter on resources and I like that you can't move them accidentally
3. A management/ordering scheme for those drawings. its gets crazy when there are a lot

Alternatives that you've considered.

No alternatives.

Additional Context

No response

[Azhrei]

Related to #380 and #729 (although 729 is specifically about Map Explorer and a more intuitive approach is likely to use multiselect via the mouse directly on the map).

[Scott5114]

Rather than converting a drawing to a new type of object, a possibly more intuitive solution would be to make drawings movable and copy-pasteable, and just provide the ability to lock them so they cannot be selected/moved/edited without unlocking them first (Inkscape offers this feature, for example).