Add GeoJSON support.

[bziobrowski]

This PR adds support for GeoJSON format (see 1 & 2) via following functions:

ST_GeomFromGeoJson(string) -> binary
ST_GeogFromGeoJson(string) -> binary
ST_AsGeoJson(binary) -> string

Supported data types:

• Point
• LineString
• Polygon
• MultiPoint
• MultiLineString
• MultiPolygon
• GeometryCollection
• Feature
• FeatureCollection

Examples:

A. Convert from WKT to GeoJSON:

• convert Point geometry

select ST_AsGeoJson(ST_GeomFromText('POINT (1 2)'))

returns

{ 
  "type":"Point",
  "coordinates":[1,2],
  "crs":{"type":"name","properties":{"name":"EPSG:0"}}
}

• convert point geography

select ST_AsGeoJson(ST_GeogFromText('POINT (1 2)'))

returns

{
  "type":"Point",
  "coordinates":[1,2],
  "crs":{"type":"name","properties":{"name":"EPSG:4326"}}
}

• convert MultiLineString geometry

select ST_AsGeoJson(ST_GeomFromText('MULTILINESTRING ((1 1, 5 1), (2 4, 4 4))'))

returns

{
  "type":"MultiLineString",
  "coordinates":[[[1,1],[5,1]],[[2,4],[4,4]]],
  "crs":{"type":"name","properties":{"name":"EPSG:0"}}
}

• convert MultiLineString geography

select ST_AsGeoJson(ST_GeogFromText('MULTILINESTRING ((1 1, 5 1), (2 4, 4 4))')) 

returns

{
  "type":"MultiLineString",
  "coordinates":[[[1,1],[5,1]],[[2,4],[4,4]]],
  "crs":{"type":"name","properties":{"name":"EPSG:4326"}}
}

B. Convert from GeoJson to WKT:

• convert Point geometry

select ST_AsText(ST_GeomFromGeoJson('{"type":"Point","coordinates":[1,2]}')) 

returns
POINT (1 2)

• convert MultiLineString geometry

select ST_AsText(ST_GeomFromGeoJson('{"type":"MultiLineString","coordinates":[[[1,1],[5,1]],[[2,4],[4,4]]]}'')

returns
MULTILINESTRING ((1 1, 5 1), (2 4, 4 4))

References:

1. https://geojson.org/
2. https://datatracker.ietf.org/doc/html/rfc7946

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 62.50000% with 48 lines in your changes missing coverage. Please review.

Project coverage is 63.75%. Comparing base (59551e4) to head (6d5545e).
Report is 1299 commits behind head on master.

Files with missing lines	Patch %	Lines
...re/geospatial/transform/function/StringReader.java	40.62%	18 Missing and 1 partial ⚠️
...patial/transform/function/StringBuilderWriter.java	43.47%	13 Missing ⚠️
...ansform/function/ConstructFromGeoJsonFunction.java	76.92%	3 Missing and 3 partials ⚠️
...patial/transform/function/StAsGeoJsonFunction.java	72.72%	3 Missing and 3 partials ⚠️
...geospatial/transform/function/ScalarFunctions.java	0.00%	3 Missing ⚠️
...eospatial/transform/function/StAsTextFunction.java	85.71%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master   #14405      +/-   ##
============================================
+ Coverage     61.75%   63.75%   +2.00%     
- Complexity      207     1556    +1349     
============================================
  Files          2436     2666     +230     
  Lines        133233   146102   +12869     
  Branches      20636    22363    +1727     
============================================
+ Hits          82274    93149   +10875     
- Misses        44911    46059    +1148     
- Partials       6048     6894     +846     

Flag	Coverage Δ
custom-integration1	100.00% <ø> (+99.99%)	⬆️
integration	100.00% <ø> (+99.99%)	⬆️
integration1	100.00% <ø> (+99.99%)	⬆️
integration2	0.00% <ø> (ø)
java-11	63.74% <62.50%> (+2.03%)	⬆️
java-21	63.64% <62.50%> (+2.01%)	⬆️
skip-bytebuffers-false	63.75% <62.50%> (+2.00%)	⬆️
skip-bytebuffers-true	63.62% <62.50%> (+35.89%)	⬆️
temurin	63.75% <62.50%> (+2.00%)	⬆️
unittests	63.75% <62.50%> (+2.00%)	⬆️
unittests1	55.46% <62.50%> (+8.57%)	⬆️
unittests2	34.12% <4.68%> (+6.39%)	⬆️

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