Rework the api again

[alexjbush]

Description

Move around the API logic so you can use the storage API either as flow actions or on their own.

Type of change

Please delete options that are not relevant.

• [ ] Bug fix (non-breaking change which fixes an issue)
• [X] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] This change requires a documentation update

How Has This Been Tested?

Unit tests, reworking existing API

[codecov-io]

Codecov Report

Merging #86 into develop will increase coverage by 0.01%. The diff coverage is 94.28%.

@@             Coverage Diff             @@
##           develop      #86      +/-   ##
===========================================
+ Coverage    82.21%   82.23%   +0.01%     
===========================================
  Files           59       59              
  Lines         1631     1632       +1     
  Branches        79       82       +3     
===========================================
+ Hits          1341     1342       +1     
  Misses         290      290

Impacted Files	Coverage Δ
...om/coxautodata/waimak/storage/StorageActions.scala	95.89% <100%> (+0.69%)	:arrow_up:
...scala/com/coxautodata/waimak/storage/Storage.scala	95% <93.75%> (-5%)	:arrow_down:

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