Support customization of all action icons via props

[tranhl]

There are a few action icons that aren't configurable via mantine*Props options at the moment. Here's a few components that I've noticed that use non-configurable action icons:

• MRT_TableHeadCellFilterLabel
• MRT_TableHeadCellSortLabel
• MRT_GlobalFilterTextInput

Luckily they have global CSS defined so it's still possible to customize them via CSS selectors. This isn't ideal though since customizing behavior via props is out of the question at current.

It would be nice to have full prop access to all action icons. Perhaps a mantineActionIconProps option which is a mapping between an action icon and it's props? Something like this:

const table = useMantineReactTable({
  mantineActionIconProps: {
    GlobalFilterSearchActionIcon: {
	  variant: 'default'
    },
    TableHeadSortActionIcon: {
      size: 'md',
    }
	...
  }
})