Function group list_manipluations

Function to manipulatre a list and create a new one Function group has those functions and groups:

• Function sort - Sort a list.
• Function sort_unique - Sort a list and remove duplicates.
• Function indexed - Map a list into a new list where each element in the new list is an object with two elements:
• Function push - Add items to a list.
• Function push_front - Add items to the from of a list.
• Function reverese - Reveres the order of a list.
• Function pop - Pop the last item from a list.
• Function pop_first - Pop the first item from a list.

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