feat: add vendor-option graphic-margin

[ger-benjamin]

For #969

I add here a first VendorOption with the graphic-margin property. This is linked to the
additional Geostyler-styler GraphicFillPadding property: geostyler/geostyler-style#651

As It's the first VendorOption, I've several questions:

1. Is the code looking as expected ?
2. Can I add tests directly into src/SldStyleParser.geoserver.spec.ts ? Or should I had a dedicated test file ?
3. How can we add this new withVendorOption parameter into the Geostyler demo, cli or qgis plugin ? Should I create and issue about that ("be more flexible with parser options") ?

[jansule]

Is the code looking as expected ?

Basically it looks good. Maybe it is smarter to have the vendorOptions deactivated by default.

Can I add tests directly into src/SldStyleParser.geoserver.spec.ts ? Or should I had a dedicated test file ?

Adding them to the src/SldStyleParser.geoserver.spec.ts tests should be fine. (I forgot that there already exists a geoserver spec file in the call today...)

How can we add this new withVendorOption parameter into the Geostyler demo, cli or qgis plugin ? Should I create and issue about that ("be more flexible with parser options") ?

Best way would probably to add an additional option just for GeoServer SLD, so users can decide if they want to use official SLD or GeoServer SLD. E.g. the format dropdown of the GeoStyler Demo should show multiple SLDs formats (SLD 1, SLD 1.1, GeoServer SLD 1, GeoServer SLD 1.1).

[ger-benjamin]

Thanks for the answers.
I've updated this PR, now it should works fine and is ready for a review.

[KaiVolland]

Very nice. Thanks

[ger-benjamin]

Thanks for the review @KaiVolland (I' can 't merge by myself)

[GeoStyler-BOT]

🎉 This PR is included in version 7.1.0 🎉

The release is available on:

• npm package (@latest dist-tag)
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