chore: Update repositories list in roadmap.yml (#124)

Co-authored-by: ReenigneArcher <42013603+ReenigneArcher@users.noreply.github.com>

Author: LizardByte-bot

.github/ISSUE_TEMPLATE/roadmap.yml

@@ -51,6 +51,7 @@ body:
         - LizardByte/Koko
         - LizardByte/LizardByte.github.io
         - LizardByte/Sunshine
+        - LizardByte/ThemerrDB
         - LizardByte/Virtual-Gamepad-Emulation-Client
         - LizardByte/actions
         - LizardByte/awesome-sunshine