openmrs: add a generic http request

[hunterachieng]

Summary

Implement a generic http request to allow both fhir and non-fhir requests to be made

Fixes #889

Details

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• Does the PR do what it claims to do?
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[josephjclark]

❗ Important! We do not want to allow absolute URLs here. Users should set state.configuration.instanceUrl

I actually think we should throw if an absolute URL is passed

Am I right in thinking that the common adaptor's request will throw if the url is absolute and baseURL has a value?

[hunterachieng]

Common does not throw an error, but rather commcare flags with a 404 if both the instanceUrl and path are absolute urls

[josephjclark]

QA note: check the built docs locally and make sure everything is OK

[hunterachieng]

@josephjclark The import method is throwing an error. I am researching for another method to reuse the typedef

[josephjclark]

@hunterachieng dang, that's a shame.

Don't spend much time on this. I was actually hoping the typedef would be available "globally" and you wouldn't need to do anything to be able to use it. Or do some simple namespacing.

So if you can't resolve it in less than half an hour, please just copy and paste the typedef

[hunterachieng]

@josephjclark I have tried other methods like globally but the import is the only one that would have work except its failing on build. I have just copy pasted instead

[josephjclark]

We should probably remove this if we're not keeping it

[josephjclark]

@hunterachieng can you please generate a Minor changeset for this feature?

[hunterachieng]

@hunterachieng can you please generate a Minor changeset for this feature?

Done

[josephjclark]

Just a few adjustments please :)