chore: initial studio-theme-sunset 0.1.0

Signed-off-by: flemming-it <stefan.a.flemming@googlemail.com>

MODULE.md

@@ -0,0 +1,19 @@
+# sunset
+
+Dusky pink / orange / violet Studio theme.
+
+This is one of F∆I Studio's bundled theme plugins. When
+installed, it appears in **Settings → Themes** alongside the
+built-in light and dark themes. Select it and the entire
+Studio UI re-themes immediately — no restart required.
+
+## When to pick this theme
+
+- Demo presentations — the palette photographs well
+- Onboarding sessions where you want the UI to feel
+  welcoming rather than enterprise
+- Operators who simply prefer warmer tones over cool ones
+
+Pink primary, orange secondary, purple tertiary. The
+gradient feel matches FaiEditorStyle.modern (gradient
+canvas backdrop) particularly well.