added possiblity to delete objects with del key

[foxriver76]

• closes Feature request: Delete marked Objects with Keyboard 'DEL' Key #1760

[Diginix]

If the cursor is in an input and some characters are selected I would expect that [DEL] deletes the selection and not an object somewhere in the object list. The context should be considered.

Same for editing of object values. Only backspace helps to delete content:

admin: 6.10.1
js-controller: 5.0.12
nodejs: 18.17.1

[foxriver76]

Please open a separate issue or reopen the issue, comments in the PR probably get lost