feat(core): 🎸 added named_svgs module to share SVG

[M-Adoo]

Purpose of this Pull Request

Added named_svgs as a replacement for IconTheme. IconTheme will be retained until the completion of the widgets refactor.

Checklist Before Merging

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• If this is linked to an issue, include the link in your description.
• If you've made changes to the code or documentation, make sure these are updated in the CHANGELOG.md file.
• If you've introduced any break changes, briefly describe them in the Breaking section of the CHANGELOG.md file.

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