[Feature Request] Allow to make an display order of module position in config (#3762)

My proposal for #3761 

* I use `flex` box for create region container
* I have moved `container` definition to `main.css` (for css tunning,
maybe it can be useful)
* I create `order` in module config for define module order display from
position

# Advantage:

We don't have to move module config in another place in array of modules

# Another advantage that i did'nt think:

We can change dynamicaly module order of a container:

- So, in this case, for a module config builder, (I won't mention the
name because otherwise I'll get angry...)
It can be usefull for a config preview (before saving config)
--> just change style css `order` module value for see preview

- Or, change `order` value in dev console for testing

# Disadvantages

I don't see any ;)

CHANGELOG.md

@@ -13,6 +13,7 @@ planned for 2025-07-01
 
 ### Added
 
+- [config] Allow to change module order for final renderer (or dynamicaly with CSS): Feature `order` in config. (#3762)
 - [clock] Added option 'disableNextEvent' to hide next sun event (#3769)
 
 ### Changed