✨ Controls placement on resource level

[RocKhalil]

Description

You can now have the placement of the actions set on the resource too. So you can have a resource with controls on the left and another one with controls on the right.

Checklist:

• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added tests that prove my fix is effective or that my feature works

Manual review steps

1. On a resource level, add self.controls_placement = :left
2. View the controls being rendered on the left instead of the default right value

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[Paul-Bob]

Thank you for this contribution @RocKhalil!

We should wrap this logic on a concern and remove unused methods, otherwise the logic is done well!

[Paul-Bob]

Let's extract this logic to a concern, something like

def controls_placement
  @controls_placement ||= @resource.controls_placement || Avo.configuration.resource_controls_placement
end

def resource_controls_on_the_right?
  controls_placement == :right
end

def resource_controls_on_the_left?
  controls_placement == :left
end

Then include the concern on the components that uses this logic.

Let's also ensure that the original methods resource_controls_on_the_right? and resource_controls_on_the_left? are deleted if they are no longer used.

[RocKhalil]

@Paul-Bob refactored into a concern + added both so we can render the controls on both sides if someone wants it