Implement Listing Actions

[ishehata]

Goals:

1. In the metadata definitions, users can define Bulk Actions that could be applied on a one or multiple rows in the listing table. Each action receives an array of IDs as a parameter and execute the function when called from UI.

2. The UI would show listing actions on a Bulk Actions Button.

3. Metadata or ListingView should contain an attribute that controls visibility of that Bulk Actions menu. (visible/hidden/disabled)

4. Permissions should be taken care of.