Implement Document create (POST) endpoint

[sergei-maertens]

Fixes #19 (partially)

Changes

• Added global configuration
  • [x] Added model + admin
  • [x] Fix audit log mixin breaking initial config record create
  • [x] Add audit/admin smoketests
• [x] implement POST /api/v1/documenten endpoint
  • [x] Global config is used to create the document metadata, using woo_publications.contrib.documenten_api.client

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 98.85057% with 1 line in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
src/woo_publications/utils/checks.py	50.00%	0 Missing and 1 partial :warning:

Files with missing lines	Coverage Δ
src/woo_publications/conf/base.py	95.55% <ø> (ø)
src/woo_publications/config/admin.py	100.00% <100.00%> (ø)
src/woo_publications/config/models.py	100.00% <100.00%> (ø)
src/woo_publications/config/validators.py	100.00% <100.00%> (ø)
...c/woo_publications/publications/api/serializers.py	100.00% <100.00%> (ø)
src/woo_publications/publications/api/viewsets.py	100.00% <100.00%> (ø)
src/woo_publications/publications/models.py	100.00% <100.00%> (ø)
src/woo_publications/utils/checks.py	89.65% <50.00%> (ø)