Allow to change "date" format in user's profile

[paulius2k]

Currently (i.e. core-2022.3.2) the user can customize these items related to local formats in their profile:

• Language
• Number format
• Time format

There is no separate option to customize Date. The date format depends solely on the Language selected by the user.
E.g. the input_datetime entity is displayed in the default format of the language in the Lovelace entities card:

• English: 3/7/2022
• English (GB): 07/03/2022

So there is no way to have English language and date in the format of e.g. 2022.03.07.

It would be appreciated if the Date format was introduced in the user's Profile configuration.

[paulius2k]

As of 2022.12.16 I see that a 4th parameter was added to profile customization:

• First day of the week

Date format would still be nice.

[paulius2k]

I checked in HA 2023.7.3, and the Date Format is there :) thank you whoever made that.