Implement ST_ASEWKT

[r3stl355]

Translates a geometry into its representation in Extended Well-known Text (EWKT) format.

Added tests and docs

[codecov[bot]]

Codecov Report

Merging #378 (95b223e) into main (bb49756) will decrease coverage by 0.05%. The diff coverage is 98.63%.

:exclamation: Current head 95b223e differs from pull request most recent head 79b291c. Consider uploading reports for the commit 79b291c to get more accurate results

@@            Coverage Diff             @@
##             main     #378      +/-   ##
==========================================
- Coverage   94.99%   94.94%   -0.05%     
==========================================
  Files         198      198              
  Lines        5655     5718      +63     
  Branches      181      171      -10     
==========================================
+ Hits         5372     5429      +57     
- Misses        283      289       +6     

Impacted Files	Coverage Δ
...cks/labs/mosaic/core/geometry/GeometryReader.scala	100.00% <ø> (ø)
...tabricks/labs/mosaic/functions/MosaicContext.scala	97.36% <90.00%> (-0.14%)	:arrow_down:
.../labs/mosaic/codegen/format/ConvertToCodeGen.scala	90.32% <100.00%> (+0.32%)	:arrow_up:
...c/codegen/format/MosaicGeometryIOCodeGenESRI.scala	100.00% <100.00%> (ø)
...ic/codegen/format/MosaicGeometryIOCodeGenJTS.scala	100.00% <100.00%> (ø)
...labs/mosaic/core/geometry/MosaicGeometryESRI.scala	96.82% <100.00%> (+0.13%)	:arrow_up:
.../labs/mosaic/core/geometry/MosaicGeometryJTS.scala	97.08% <100.00%> (+0.11%)	:arrow_up:
...ks/labs/mosaic/core/geometry/api/GeometryAPI.scala	100.00% <100.00%> (ø)
...metrycollection/MosaicGeometryCollectionESRI.scala	97.72% <100.00%> (+0.02%)	:arrow_up:
...ometrycollection/MosaicGeometryCollectionJTS.scala	100.00% <100.00%> (ø)
... and 13 more

... and 1 file with indirect coverage changes

[r3stl355]

I'll add more tests

[r3stl355]

CodeCov report still shows the original commit results, last commit results can be see here and show all green: https://app.codecov.io/github/databrickslabs/mosaic/commit/95b223e4fcf8e32242d36a085dead3065453eee4

[r3stl355]

cleaned up and rebased

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[CLAassistant]

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