Ability to click between blocks / set container cursor by click

[johannesmutter]

UX issue

In order to add a new block before/ after another block one has to:

1. Click a non-text element
2. Press arrow down
   → The container cursor appears

or in case of clicking a text element:

1. Click the text element
2. Press ESC
3. Press arrow down

This will be especially difficult on mobile where there's no keyboard available.

Proposed solution

Step1

• We add a clickable surface between blocks
• This surface is rendered inside "svedit-overlays"

[michael]

Thought about this more when testing on Android. I think it's acceptable to go from a regular block selection to a collapsed cursor using an arrow key. Since there's no way to customize the soft keyboard and add arrow keys, we could render floating "move up/down" buttons and possibly even "expand up/down" those tools would be always visible and also allow you to switch from a text selection to the nearest container cursor.

On desktop we can add thin click surfaces as you suggested, though a first version could be without. It's like bonus stuff for improved UX we could add later.