kobotoolbox: add generic http helpers

[aleksa-krolls]

Request

Add support for basic http helpers for these methods:

1. GET
2. POST
3. PUT

Note that we'll revisit the existing functions like getSubmissions(...) later as Joe wants to revisit the signature and develop more of a spec for #603.

API docs

https://kf.kobotoolbox.org/api/v2/assets/
fyi assets in the API language are the same thing as kobo forms

Credentials

See LP openfn demo Kobo Account

Testing Guidance

Make sure the helpers can support these requests:

1. GET /api/v2/assets/{uid}/deployment/ --> this will return the deployment status of this form(which basically says whether or not this form is deployed already).

• You can try with this form with uid aNxSba2DYAF3wm8hLyGUxK --> you should find that this form is not yet deployed
• To get other form examples, run GET /api/v2/assets/ to query a list of kobo forms in this account

2. POST /api/v2/assets/{uid}/deployment/ --> run this to try to deploy the form
3. PUT /api/v2/assets/{uid}/deployment/ --> run this to try updating the status to deploy the form

[aleksa-krolls]

fyi @hunterachieng - synced with @josephjclark on this recently, and we think that actually #603 is not ready to be worked on... so we'll do this instead in the next kobo sprint. Ahead of the meeting Monday, please review this issue and provide estimates

[josephjclark]

@hunterachieng when you get around to this, please add all the http helpers into the http. namespace - like we're doing with OpenMRS!