Allow OR filters and nested filters, add tests for carbon layers

[jterry64]

Pull request checklist

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• [X] Make sure you are requesting to pull a topic/feature/bugfix branch (right side). Don't request your master!
• [X] Make sure you are making a pull request against the develop branch (left side). Also you should start your branch off our develop.
• [X] Check the commit's or even all commits' message styles matches our requested structure.
• [X] Check your code additions will fail neither code linting checks nor unit test.

Pull request type

Please check the type of change your PR introduces:

• [X] Bugfix
• [X] Feature
• [ ] Code style update (formatting, renaming)
• [ ] Refactoring (no functional changes, no api changes)
• [ ] Build related changes
• [ ] Documentation content changes
• [ ] Other (please describe):

What is the current behavior?

-Only allows single-level AND filters in query. -Multiple aggregates with no group by will return results in incorrect format.

Issue Number: GTC-1246

What is the new behavior?

• Allow nested OR and AND filters
• Return multiple aggregates with no grouping in standard format
• Add tests for carbon layers to make sure widgets can be supported

Does this introduce a breaking change?

• [ ] Yes
• [X] No

[codecov[bot]]

Codecov Report

Merging #46 (55773cb) into develop (a0590b1) will increase coverage by 1.37%. The diff coverage is 98.70%.

@@             Coverage Diff             @@
##           develop      #46      +/-   ##
===========================================
+ Coverage    90.35%   91.72%   +1.37%     
===========================================
  Files           20       20              
  Lines         1057     1100      +43     
===========================================
+ Hits           955     1009      +54     
+ Misses         102       91      -11     

Flag	Coverage Δ
unittests	91.72% <98.70%> (+1.37%)	:arrow_up:

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
raster_analysis/query.py	96.11% <98.30%> (+1.62%)	:arrow_up:
raster_analysis/query_executor.py	92.47% <100.00%> (+5.10%)	:arrow_up:
raster_analysis/tiling.py	98.94% <100.00%> (-0.02%)	:arrow_down:
raster_analysis/window.py	94.20% <100.00%> (+0.26%)	:arrow_up:
tests/e2e/test_raster_analysis.py	100.00% <100.00%> (+4.20%)	:arrow_up:
tests/fixtures/fixtures.py	100.00% <100.00%> (ø)

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