add tama theme

[kt-alt]

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Category: Code style update (new theme)

Overview
Added new "Tama" theme (based off of the Adventure one)

• a random background image from Unsplash.com (on every page load) and can be customized
• added transparent background tile for Widgets (to match the Items one)
• added a tile icon grow effect on hover

Screenshot (if applicable)
screenshot here

Code Quality Checklist (Please complete)

• [x ] All changes are backwards compatible
• All lint checks and tests are passing
• There are no (new) build warnings or errors
• (If a new config option is added) Attribute is outlined in the schema and documented
• (If a new dependency is added) Package is essential, and has been checked out for security or performance
• Bumps version, if new feature added

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[viezly]

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[Lissy93]

Nice :)

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