Investigate on missing decision records

[juliapampus]

We have some architectural decisions and implementation concepts located in closed issues, but not in our docs.

List of missing decision records:

• [ ] #239
• [ ] #227
• [ ] #541
• [x] #855
• [x] #1494

Extension documentation

• [ ] #963
• [x] ~#238~
• [x] #463
• [x] ~#622~

[github-actions[bot]]

This issue is stale because it has been open for 14 days with no activity.

[github-actions[bot]]

This issue was closed because it has been inactive for 7 days since being marked as stale.

[github-actions[bot]]

This issue was closed because it has been inactive for 7 days since being marked as stale.