refactor: move submodule into this repo

src/content/games/demon-turf.md

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+---
+alias: Demon Turf
+developers:
+  - Fabraz
+  - Playtonic Friends
+franchises:
+  - None
+genres:
+  - Platform
+  - Adventure
+  - Indie
+registered_hours: 0
+release: 2021-11-03
+date_added: '2023-12-17'
+status: Wishlist
+times_played: 0
+title: Demon Turf
+url: https://www.igdb.com/games/demon-turf
+---
+
+# Demon Turf
+
+## Brief
+
+> The 3D platformer with attitude! Join Beebz in her ambitious goal of taking over the Demon Turfs and becoming the Demon Queen herself! Jump, spin and punch your way across the turfs with unique mechanics like momentum-driven combat and self-placed checkpoints. Face the Demon King head on!
+
+## Thoughts