New icon to communicate AI capabilities

[ryankeairns]

Is your feature request related to a problem? Please describe.
More and more AI capabilities are being added to our product UIs and there are a growing variety of symbols and words being used. The industry standard seems to be trending toward a magic wand or sparkles, as seen in some examples below.

Describe the solution you'd like
Add a new wand or sparkles glyph to EuiIcon

Additional context
Once added, we should communicate to the Security team, specifically as they are already adding things to their UI.
Separately, we will track the creation of UI patterns on this topic, as well.

[andreadelrio]

Adding the Notion example