Updates to ICOB API's including support for versioning

[ianco]

Work is in progress on this topic but opening the PR in Draft mode for visibility and feedback.

General cleanup of the v2 API's.

Support for multiple API versions using middleware = will detect version in an Accept header or in the URL and will map to the appropriate version of the service. Includes support for things like "default", "latest" or whatever other synonyms we want to support.

The underlying API URL's use the version in the url (such as "/api/v2") however we can hide this in the URL's that we expose.

[ianco]

Ticket is: https://app.zenhub.com/workspaces/von---verifiable-organization-network-5adf53987ccbaa70597dbec0/issues/bcgov/indy-catalyst/344

[andrewwhitehead]

If it's going to use the Accept header, I think the code should split it on commas first, since the header can have multiple values. I'm not sure if the space in the given examples is valid, as in application/orgbook.bc.api+json; version=v2.

[ianco]

Taking this out of draft for whoever want to work on this next

[esune]

I had a look at this before I got pulled into something else. Writing this thought down so that I/we don't forget: I am not sure we need to support old API versions for ICOB since it has not yet been released for production and I would therefore be inclined towards cleaning everything up and having a "fresh start" using - if possible - the standard versioning schemes supported by drf out of the box for simplicity.

Thoughts?

[codecov]

Codecov Report

Merging #343 into master will increase coverage by 0.94%.
The diff coverage is n/a.

@@            Coverage Diff            @@
##           master    #343      +/-   ##
=========================================
+ Coverage   59.45%   60.4%   +0.94%     
=========================================
  Files          91      97       +6     
  Lines        2765    2912     +147     
=========================================
+ Hits         1644    1759     +115     
- Misses       1121    1153      +32

[esune]

PR has become stale, will reopen when ready to move forward.