[EPIC] Legacy Traditional Schools features to document/abstract out

This issue follows the same format as #4 in identifying components from the Legacy Traditional Schools codebase that could be used on other projects.

**Helpers:**

- [get_svg_content()](https://github.com/humanmade/legacy-traditional/blob/eb24f3f2bbb6f8da05383da6c159976692e78693/wp-content/themes/legacy-traditional/inc/helpers.php#L19) - This function returns the inline SVG content from an SVG file.

**Blocks:**

- [Number Counter](https://github.com/humanmade/legacy-traditional/tree/main/wp-content/mu-plugins/legacy-traditional-blocks/src/blocks/number-counter) - Display number stats with counter animation. The counter animation could be improved.
- [Tabbed Content](https://github.com/humanmade/legacy-traditional/tree/main/wp-content/mu-plugins/legacy-traditional-blocks/src/blocks/tabbed) & [Tabbed Item](https://github.com/humanmade/legacy-traditional/tree/main/wp-content/mu-plugins/legacy-traditional-blocks/src/blocks/tabbed-item) - Compare to other projects.
- [Taxonomy Terms](https://github.com/humanmade/legacy-traditional/tree/main/wp-content/mu-plugins/legacy-traditional-blocks/src/blocks/taxonomy-terms) - Display a list of all terms for a taxonomy. Similar to the Categories block, but enables taxonomy selection.

**PHP Classes:**

- [LTS_Settings](https://github.com/humanmade/legacy-traditional/blob/main/wp-content/mu-plugins/legacy-traditional-site-settings/inc/class-lts-settings.php) - Class for adding setting sections and fields using the WordPress Settings API.