autolayout imrovements for expanded subapps

[lindhuber]

Contains some changes to improve code and layout quality as well as the possibility to layout expanded subapps by selecting everything(ctrl+a) and calling the new menu entry.

[github-actions[bot]]

Test Results

    94 files  ±0      94 suites  ±0   38s :stopwatch: -1s 27 159 tests ±0  27 159 :white_check_mark: ±0  0 :zzz: ±0  0 :x: ±0  27 160 runs  ±0  27 160 :white_check_mark: ±0  0 :zzz: ±0  0 :x: ±0 

Results for commit 896f59c4. ± Comparison against base commit 0225e524.

[oberlehner]

After layouting this :

I get this

[oberlehner]

Furthermore the undo behaviour of "layout nested subapps" feels strange. pressing undo does not undo the whole layout, it just "undoes" one connection. this means i have to press multiple times undo until i can undo the layout.

[azoitl]

@oberlehner is the sub-app size locked?

[oberlehner]

@oberlehner is the sub-app size locked?

no

[oberlehner]

Functionilayt is given, UNDO needs to be fixed in a follow up commit