[DOCS] Add SVG visuals for 12 raster functions (Phase 12)

[jiayuasu]

Summary

Add SVG visual illustrations for 12 raster functions, replacing old PNG visuals where applicable.

Functions covered (15 SVGs total):

• Raster Operators: RS_Clip, RS_Interpolate, RS_ReprojectMatch, RS_NormalizeAll, RS_Resample, RS_Union
• Raster Aggregate: RS_Union_Aggr
• Raster Map Algebra: RS_MapAlgebra
• Raster Band Accessors: RS_ZonalStats, RS_ZonalStatsAll
• Raster Accessors: RS_RasterToWorldCoord, RS_WorldToRasterCoord

Additional visuals:

• RS_ReprojectMatch_clip: shows input being clipped to reference extent
• RS_ZonalStats_allTouched / RS_ZonalStatsAll_allTouched: allTouched parameter comparison

Highlights:

• RS_Resample: shows both upsample (3×3→6×6) and downsample (6×6→3×3) with NearestNeighbor, Bilinear, and Bicubic algorithms with computed pixel values
• RS_ReprojectMatch: two SVGs showing NoData padding (input smaller) and clipping (input larger)
• Old PNG references removed from RS_Clip, RS_Interpolate, RS_ReprojectMatch

Partially addresses #2678

[Copilot]

Pull request overview

Adds new SVG-based illustrations for multiple raster SQL functions to improve documentation clarity and replace legacy PNG visuals, helping address #2678.

Changes:

• Added new SVG diagrams for RS_* raster functions (e.g., Clip, Interpolate, ReprojectMatch, Union, ZonalStats, coord accessors).
• Embedded the new SVGs into the corresponding function documentation pages.
• Removed legacy PNG output image references where applicable.

Reviewed changes

Copilot reviewed 12 out of 27 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
docs/image/RS_Clip/RS_Clip.svg	New SVG illustrating crop=true/false behavior and NoData outside geometry.
docs/image/RS_Interpolate/RS_Interpolate.svg	New SVG illustrating IDW interpolation inputs/outputs.
docs/image/RS_MapAlgebra/RS_MapAlgebra.svg	New SVG illustrating multi-band map algebra (NDVI example).
docs/image/RS_NormalizeAll/RS_NormalizeAll.svg	New SVG illustrating normalization from input range to [0,255].
docs/image/RS_RasterToWorldCoord/RS_RasterToWorldCoord.svg	New SVG illustrating raster-to-world coordinate conversion.
docs/image/RS_WorldToRasterCoord/RS_WorldToRasterCoord.svg	New SVG illustrating world-to-raster coordinate conversion.
docs/image/RS_ReprojectMatch/RS_ReprojectMatch.svg	New SVG illustrating padding with NoData when input doesn’t cover reference extent.
docs/image/RS_ReprojectMatch_clip/RS_ReprojectMatch_clip.svg	New SVG illustrating clipping when input extent exceeds reference extent.
docs/image/RS_Union/RS_Union.svg	New SVG illustrating unioning rasters into a multi-band output.
docs/image/RS_Union_Aggr/RS_Union_Aggr.svg	New SVG illustrating RS_Union_Aggr grouping into a multi-band raster.
docs/image/RS_ZonalStats/RS_ZonalStats.svg	New SVG illustrating zonal stats over a zone geometry.
docs/image/RS_ZonalStatsAll/RS_ZonalStatsAll.svg	New SVG illustrating multi-stat zonal summary output.
docs/image/RS_ZonalStats_allTouched/RS_ZonalStats_allTouched.svg	New SVG comparing allTouched=false vs true selection.
docs/image/RS_ZonalStatsAll_allTouched/RS_ZonalStatsAll_allTouched.svg	New SVG comparing allTouched=false vs true selection (All variant).
docs/api/sql/Raster-Operators/RS_Clip.md	Adds SVG illustration and removes legacy PNG references.
docs/api/sql/Raster-Operators/RS_Interpolate.md	Adds SVG illustration and removes legacy PNG references.
docs/api/sql/Raster-Map-Algebra-Operators/RS_MapAlgebra.md	Adds SVG illustration to Map Algebra docs.
docs/api/sql/Raster-Operators/RS_NormalizeAll.md	Adds SVG illustration to NormalizeAll docs.
docs/api/sql/Raster-Operators/RS_ReprojectMatch.md	Adds SVG illustrations and removes legacy PNG reference.
docs/api/sql/Raster-Operators/RS_Resample.md	Adds SVG illustration to Resample docs.
docs/api/sql/Raster-Operators/RS_Union.md	Adds SVG illustration to Union docs.
docs/api/sql/Raster-Aggregate-Functions/RS_Union_Aggr.md	Adds SVG illustration to Union_Aggr docs.
docs/api/sql/Raster-Band-Accessors/RS_ZonalStats.md	Adds SVG illustrations including allTouched comparison.
docs/api/sql/Raster-Band-Accessors/RS_ZonalStatsAll.md	Adds SVG illustrations including allTouched comparison.
docs/api/sql/Raster-Accessors/RS_RasterToWorldCoord.md	Adds SVG illustration to accessor docs.
docs/api/sql/Raster-Accessors/RS_WorldToRasterCoord.md	Adds SVG illustration to accessor docs.

Comments suppressed due to low confidence (1)

docs/api/sql/Raster-Operators/RS_ReprojectMatch.md:56

• The examples section now ends with an Output: label but no output content after removing the PNG. Either add an output illustration/value (e.g., reuse/extend the new SVGs) or remove the empty Output: section so the page doesn’t look incomplete.

Output:

</details>



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