[FEATURE] Added Item Manager for editing items resources

added manager for managing item resources

__Tasks:__
- [ ] gather feedback for my changes

__Informations:__

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | yes
| Tests pass?   | none
| Fixed tickets | i hope so
| Doc           | none

@turbo-ele it should probably be the plural?