Add Conjugate App Scribe-Server data download functionality

[andrewtavis]

Terms

• I have searched open and closed feature requests
• I agree to follow Scribe-Android's Code of Conduct

Description

Note

• This issue is blocked by Creation of Conjugate App download data UI #564 where the UI is created.

Once the download UI is finalized in #564, we'll then be ready to add in the download data functionality for Scribe-Conjugate. Ideally this would be using shared functions for the Keyboard and Conjugate apps so that they in sync.

The big difference for this is that:

• In the keyboard app we want to download all data for a given language
• In the Conjugate app we just want to download the verbs
• As with the keyboard app, in the Conjugate app we should also download the data contracts such that the data can be used in the application in a programmatic way that's determined by the contract

Contribution

Happy to support with this and review a PR! This is a bit more difficult of an issue :)