Add theme: nord-aurora

[R055A]

Description

Add a new theme: nord - aurora

Sourced from: https://github.com/nordtheme/nord

#32

Type of change

• New feature (added a non-breaking change which adds functionality)
• Updated documentation (updated the readme, templates, or other repo files)

Checklist:

• I have checked to make sure no other pull requests are open for this issue
• The code is properly formatted and is consistent with the existing code style
• 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

[DenverCoder1]

[R055A]

Thank you @DenverCoder1 must say it could do with some improvements, but is a good start