Feature request: Posibility to add notes to a build and an item

Hello,

it would very useful to add notes to a build (as separate tab-register) and remarks to an item (as tooltip).
With this notes/remarks, it should be possible to add explanations to the build or prefered stats to an item.

Greetings
Styxion

No files or tests are named. Start by locating the build view and item display components, then trace how build and item data are stored or serialized. Done means users can enter and later view build notes in a separate tab and item remarks as tooltips.

Written by the indexing model from the issue text.