Scenario and Portfolio update

[DanteNiewenhuis]

Summary

Updated Scenarios and Portfolios to be defined using JSON files.

Implementation Notes ⚒️

Scenarios and Portfolios are reworked and can now be defined using JSON files.
This makes it much easier for users to work without requiring in depth knowledge of the code.

External Dependencies 🍀

N/A

Breaking API Changes ⚠️

Removed capelin and greenifier experiments.
In their place a Scenario and Portfolio experiment is added.
These experiments show how a user can use the new implementations of Scenarios and Portfolios

Simply specify none (N/A) if not applicable.

[codecov]

Codecov Report

Attention: Patch coverage is 6.01852% with 203 lines in your changes are missing coverage. Please review.

Project coverage is 71.02%. Comparing base (960b3d8) to head (f438432).

Files	Patch %	Lines
.../experiments/base/models/scenario/ScenarioSpecs.kt	0.00%	56 Missing ⚠️
...g/opendc/experiments/base/runner/ScenarioRunner.kt	0.00%	44 Missing ⚠️
...rg/opendc/experiments/scenario/ExamplePortfolio.kt	0.00%	19 Missing ⚠️
...eriments/base/models/scenario/ScenarioFactories.kt	0.00%	18 Missing ⚠️
...ndc/compute/service/scheduler/ComputeSchedulers.kt	0.00%	14 Missing ⚠️
...lin/org/opendc/experiments/scenario/ScenarioCli.kt	0.00%	12 Missing ⚠️
...pendc/experiments/base/models/scenario/Scenario.kt	0.00%	11 Missing ⚠️
...iments/base/models/portfolio/PortfolioFactories.kt	0.00%	6 Missing ⚠️
...periments/base/models/portfolio/PortfolioReader.kt	0.00%	6 Missing ⚠️
...experiments/base/models/scenario/ScenarioReader.kt	0.00%	6 Missing ⚠️
... and 5 more

Additional details and impacted files

@@             Coverage Diff              @@
##             master     #209      +/-   ##
============================================
- Coverage     71.08%   71.02%   -0.06%     
+ Complexity     2191     2158      -33     
============================================
  Files           355      352       -3     
  Lines          9966     9818     -148     
  Branches       1052     1058       +6     
============================================
- Hits           7084     6973     -111     
+ Misses         2556     2522      -34     
+ Partials        326      323       -3     

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