component updates: handles when list is empty and handles async loading of list

[csantiago132]

This PR adds a couple of updates to the component;

Changes/Updates:

• list of members are loaded from local state instead of props; this makes async loading and updating the list easier and automatically

New:

• adds a prop to display when the list is empty instead of displaying nothing
• adds a slot emptyList to display any custom component when list is empty

Breaking changes:

• members prop got changed to list-members this is because the code is so couple to 'members' prop that its easier to change a prop instead of the whole codebase

[csantiago132]

can solve #106 and #100

[fritx]

Thanks, just wait for my test case being ready and once the test passed in all cases I can merge it.

[csantiago132]

@fritx ok thanks for taking the time to review it!

[mirkos93]

Any update regarding the merge of this pull request? Thank you

[fritx]

@mirkos93 @csantiago132 sorry I can not merge the PR directly as it breaks the interface to users (for example, the prop is renamed)