Add support for Wind Barb rendering for mesh vector datasets (Request in QGIS)

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Request for documentation

From pull request qgis/QGIS#57011 Author: @uclaros QGIS version: 3.38

Add support for Wind Barb rendering for mesh vector datasets

PR Description:

Description

Wind Barbs are a common way to display wind strength and direction on maps.

This PR adds a new Wind Barbs symbology type for mesh vector datasets.

Wind barbs encode the wind speed in knots (nautical miles per hour) so the user should select the units his data are in, or a custom multiplier that should be used to convert the units to knots.

Commits tagged with [need-docs] or [FEATURE]