Create discord utils to get objects

[akotadi]

Description

Add custom functions to improve how we retrieve specific objects from discord.

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation update

How Has This Been Tested?

Added unit tests and tested manually in test server.

Checklist:

• I have commented my code, particularly in hard-to-understand areas
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works

[akotadi]

• add comands new roles #53
• Improve roles command #76
• Add custom error handler #75
• Create discord utils to get objects #74 👈 (View in Graphite)
• develop

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