Feature/sort by buttons

[bernhardh]

As discussed, a couple of days ago on discord, this PR reintroduces optionally the up/down buttons for repeater and builder. By default, the buttons are disabled (not shown), so its a none breaking change. If you don't use it, you will not see any change.

To enable just change the config (forms.components.repeater.up_and_down_buttons and forms.components.builder.up_and_down_buttons).

When enabled, it will look like this:

Same goes for the builder. In the following example, i Have enabled collapsible and clonable as well, just to see multiple icons:

[what-the-diff]

• Added a new property isReorderableWithButtons to the Builder and Repeater components.
• Updated the builder component template with buttons for moving items up/down in case this feature is enabled (defaults to false).
• Updated the repeater component template with buttons for moving items up/down in case this feature is enabled (defaults to false).
• Added helper functions: array_move_after, array_move_before, blank & filled which are used by these features internally but can be useful elsewhere as well so I added them here instead of creating another package just for those helpers :)

[bernhardh]

All requested changes done. Thank you!

[bernhardh]

Any chance, that this PR gets merged soon?

[danharrin]

Thanks