Improvements to Realtime Collaboration (Patching)

[loreanvictor]

Checklist

• I documented the TypeScript code using JSDoc style (NA)
• I added multiple screenshots/screencasts of my UI changes
• I translated all the newly inserted strings into German and English (NA)

Motivation and Context

Realtime collaboration made with Apollon APIs is jumpy and sometimes results in inconsistent states.

Description

This change will provide following improvements to Apollon patching mechanism:

• It will emit patches for element resizing
• It will emit whole-sale patches for relationship paths to avoid inconsistent reconciliation.
• Emitted patches are calculated without centering the diagram
• Importing patches will not center the diagram

Steps for Testing

• Clone this branch
• Clone Apollon standalone
• link it to Apollon standalone
• Run Apollon standalone, open two windows and test the changes.

Test Coverage

File	Branch	Line
components/store/model-state.ts	97.22%	91.03%
components/store/model-store.tsx	100%	100%
components/uml-element/resizable/resizable.tsx	100%	65.38%
services/patcher/compare.ts	100%	100%
services/uml-element/remote-selectable/remote-selection-reducer.ts	100%	100%

Screenshots

[matthiaslehnertum]

Looks good so far! If you could tackle the invalid non-null assertions as remarked by GitHub I feel like this one would be good to go! :)