Enhance Point2Grid to filter quality control strings with config file options

[JohnHalleyGotway]

Describe the Enhancement

While developing a wrapper for the Point2Grid tool via dtcenter/METplus#2540, a short-coming in the Point2Grid configuration file was discovered. Please see this issue comment for details. Put simply, the existing quality_mark_thresh config file option should be replaced by the obs_quality_inc and obs_quality_exc config file options supported for the Point-Stat and Ensemble-Stat tools.

Be sure to update the unit tests to demonstrate these options and update the documentation accordingly.

Time Estimate

1 day

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• METplus, MET, METdataio, METviewer, METexpress, METcalcpy, METplotpy
• Enhancement: Add support for a Point2Grid config wrapper METplus#2540 already exists to add a Point2Grid wrapper.

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[JohnHalleyGotway]

This issue is blocking dtcenter/METplus#2540.

[JohnHalleyGotway]

Added logic in point2grid to filter by the obs_qty_inc/exc settings but I get a segfault whenever that code is exercised. Recommend debugging on seneca to see why the MetPointObsData::get_obs_qty(int index) segfaults. Presumably, the obs_qids array it is references is not populated... or something like that.