Add maxItemsShown property

[corentinleberre]

Changes

I added a maxItemsShown attributes to the autocomplete component. Indeed I experienced performance issues while using large array, causing a delay (3 to 4 seconds) to open the dropdown.

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Checklist

• My code follows the style guidelines of this project
• 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
• My changes generate no new warnings