Fix date/time formatting output

[mauteri]

Add Date Format and Time Format for date & time output in GatherPress under GatherPress general settings.

[patriciabt]

Tested with your latest build.

In settings: all good.
In events: still displays the default date/time format

[patriciabt]

Got something here, after talking about it with @mauteri (as it also happens for standard posts!)
The date time format here follows the format entered in the template, and not the one set in general or GatherPress settings because it's a FSE theme!
And this is something I'll ask to the Gutenberg project!

[patriciabt]

I was wrong in the previous comment and this above is solved.

But there is another place where the datetime format output is wrong, it's in the event block when we add it to any content

where it's correct now the output in the event single, or in the page listing events

[mauteri]

This is at the block level, so I'm going to put this configuration into the block itself as a setting.

[mauteri]

PR for this #517