[Backend] Created access decorators for all user types

[amlannandy]

Description

Created access decorators for each user type - Admin, Management, Extractor If you add this decorator (e.g mangement_only decorator) on a route, then that route will only be accessible to management.

Fixes #136

Type of change

• [x] New feature (non-breaking change which adds functionality)

How Has This Been Tested?

Add the necessary decorator to a route, now it can only be accessed by that user type.

Test Configuration:

• Windows 10

Checklist:

• [x] My code follows the style guidelines of this project
• [x] I have performed a self-review of my own code
• [x] I have commented my code, particularly in hard-to-understand areas
• [ ] I have made corresponding changes to the documentation
• [x] My changes generate no new warnings
• [ ] I have added tests that prove my fix is effective or that my feature works
• [x] New and existing unit tests pass locally with my changes
• [ ] Any dependent changes have been merged and published in downstream modules