Autofocus first input field in all dialogs and forms

[Perchycs]

Whenever a dialog or form opens in the Home Assistant frontend the first text input field should automatically receive focus, so you can immediately begin typing. This behaviour is standard across many modern UIs and greatly improves keyboard navigation and speed.

I often open dialogs to create or rename entities or edit fields and would expect to type immediately after the dialog opens and be able to press Tab to move through fields.

Currently, I have to use the mouse to click the first field, every time, and often forget, accidentally opening the various quick navigation bars.

Proposed Behaviour:

When any dialog/form opens (one example being in the create UI Helper dialogue), the first visible, focusable text input should automatically have the cursor focussed, so you can begin typing.

Another option could be similar to sites such as Google or Youtube, you can press 'ctrl' + '/' to immediately focus the search dialogue.

[benkeil]

When opening the Quick bar it would be nice to use the arrow keys to navigate through the search results.

[benkeil]

if you change a page you can't use the arrow keys, but if you then reload the page you can use them again.