Task 7: Add more parameters to SLD for user preferences

[mzagorskirs]

Epic: https://github.com/mzagorskirs/geowave/issues/3

Some parameters to add:

• [x] Option to run statistic upon initial heatmap render if the statistic does not already exist in datastore (otherwise, the render will be based on the equivalent aggregation query, by default).
• Spatial binning type (S2, H3, or Geohash). -- this is extra and might not be added in this ticket, but rather in a future ticket; Geohash is the requested spatial binning strategy._
• [x] Field name to run statistics or aggregations on (weightAttr - this param existed but was not hooked up to custom heatmap process).
• [x] Query type options:
  • count aggregation (CNT_AGGR)
  • field sum aggregation (SUM_AGGR)
  • count statistics (CNT_STATS)
  • field sum statistics (SUM_STATS)
  • [x] Option to use spatial binning or the regular heatmap process.

[mzagorskirs]

Parameters added to automatically update the query type and weightAttr for the custom heatmap process. Demo videos showing the dynamic parameters being changed in the SLD file are posted here: https://github.com/mzagorskirs/geowave/issues/11

Here is a demo video of the createStats toggle. Notice that if set to false, the count statistics are not generated and saved to the datastore and the default count aggregation query is used for multiple runs. When the toggle is set to true, the count statistics are generated and saved to the datastore and the default count aggregation is used only on the first run as a default while the statistics are being generated and saved. Upon subsequent runs, the statistics will be output.

Notes:

• the toggle only works when the queryType is set to one of the statistics options (e.g. CNT_STATS or SUM_STATS).
• the geojson output files are for testing and accuracy verification purposes only; they will not be part of the final tool functionality.

https://user-images.githubusercontent.com/43011672/163452325-e2e7b3b7-e888-460a-9517-afca87b68947.mp4

[rfecher]

approved