Add device_type to Confirmed Delivery Request

[rgomezp]

Description

1 Line Summary

Providing this param will help in backend look-ups for outcome event reporting.

Details

See commits for further details

Systems Affected

• WebSDK
• Backend
• Dashboard

Validation

Tests

Info

Added testing coverage via nock to ensure we are sending the device_type on confirmed deliveries.

Includes some refactoring also related to nock.

Checklist

• All the automated tests pass or I explained why that is not possible
• I have personally tested this on my machine or explained why that is not possible
• I have included test coverage for these changes or explained why they are not needed

Programming Checklist
Interfaces:

• Don't use default export
• New interfaces are in model files

Functions:

• Don't use default export
• All function signatures have return types
• Helpers should not access any data but rather be given the data to operate on.

Typescript:

• No Typescript warnings
• Avoid silencing null/undefined warnings with the exclamation point

Other:

• Iteration: refrain from using elem of array syntax. Prefer forEach or use map
• Avoid using global OneSignal accessor for context if possible. Instead, we can pass it to function/constructor so that we don't call OneSignal.context

Screenshots

Info

Checklist

• I have included screenshots/recordings of the intended results or explained why they are not needed
  No screenshots necessary

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Related Tickets

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This change is 

[jkasten2]

Reviewed 3 of 3 files at r1, all commit messages.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @rgomezp)