feat(icons): added glider icon

[roygommer]

What is the purpose of this pull request?

• New Icon

Description

Added new glider icon.

Icon use case

To use in the selection menu of a website containing weather information for different kind of aircraft.
To use do decorate a webpage containing all sorts of aircraft.
To demonstrate a glider airplane.

Alternative icon designs

Icon Design Checklist

Concept

• I have provided valid use cases for each icon.
• I have not added any a brand or logo icon.
• I have not used any hate symbols.
• I have not included any religious or political imagery.

Author, credits & license

• The icons are solely my own creation.
• The icons were originally created in # by @
• I've based them on the following Lucide icons:
• I've based them on the following design:

Naming

• I've read and followed the naming conventions
• I've named icons by what they are rather than their use case.
• I've provided meta JSON files in icons/[iconName].json.

Design

• I've read and followed the icon design guidelines
• I've made sure that the icons look sharp on low DPI displays.
• I've made sure that the icons look consistent with the icon set in size, optical volume and density.
• I've made sure that the icons are visually centered.
• I've correctly optimized all icons to three points of precision.

Before Submitting

• I've read the Contribution Guidelines.
• I've checked if there was an existing PR that solves the same issue.

[github-actions]

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