[FEATURE] Save/remember table positions on export

**Is your feature request related to a problem? Please describe.**
When I or my colleague export schema into any format, then trying to import tables appear in random place and order. Then it takes a lot of time to organize that again, to have clarity and minimum intersections between lines.
Image exports that preserve the same positions doesn't allow to reimport and modify schema.

**Describe the solution you'd like**
Would be great if system could extend existing formats (e.g. DBML, JSON) or develop new format that would preserve position.
Otherwise extend ability to save this information on server. So that even if I change browser I could access diagram later.

**Additional context**
_< none >_