Add uniq method to list type

[briandowns]

What's Changed:

Add the ability to deduplicate a list.

Type of Change:

• Bug fix
• New feature
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Housekeeping:

• Tests have been updated to reflect the changes done within this PR (if applicable).
• Documentation has been updated to reflect the changes done within this PR (if applicable).

Screenshots (If Applicable):

[Jason2605]

Neat way of handling it! Can I be a pain and change it to unique please?

It also makes me think I probably need to re-look at the set data type it’s not really had very much love

[briandowns]

Not a pain. Your language, your preferences. :D

[Jason2605]

Thank you, and thanks for this!