**What**
- calculate the shipping option price when creating a shipping method
- calculate the shipping option price when refreshing cart
- add testing for calculated SO flow
- fix validation on calculated SO creation
- add manual fulfillment provider for testing
- add `from_location` to calculation context
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RESOLVES CMRC-778
RESOLVES CMRC-602
RESOLVES SUP-136
**What**
Update the `MedusaService` class, factory and types to remove the concept of main modules. The idea being that all method will be explicitly named and suffixes to represent the object you are trying to manipulate.
This pr also includes various fixes in different modules
Co-authored-by: Stevche Radevski <4820812+sradevski@users.noreply.github.com>
Co-authored-by: Oli Juhl <59018053+olivermrbl@users.noreply.github.com>
