Initial commit — violet-chaton ricing setup

Environnement terminal complet aux couleurs violet-chaton pour Pop!_OS / Ubuntu avec COSMIC Desktop.
Inclut scripts d'installation, configs shell, thèmes et support COSMIC/Vivaldi/Vesktop.

INSTALL/themes/cosmic/com.system76.CosmicTheme.Dark/v1/button

@@ -0,0 +1,74 @@
+(
+    base: (
+        red: 0.66336143,
+        green: 0.57746667,
+        blue: 0.7633233,
+        alpha: 0.25,
+    ),
+    hover: (
+        red: 0.41730216,
+        green: 0.35809755,
+        blue: 0.4853286,
+        alpha: 0.4,
+    ),
+    pressed: (
+        red: 0.19174777,
+        green: 0.13504036,
+        blue: 0.24537402,
+        alpha: 0.625,
+    ),
+    selected: (
+        red: 0.41730216,
+        green: 0.35809755,
+        blue: 0.4853286,
+        alpha: 0.4,
+    ),
+    selected_text: (
+        red: 0.90588236,
+        green: 0.6117647,
+        blue: 0.99607843,
+        alpha: 1.0,
+    ),
+    focus: (
+        red: 0.90588236,
+        green: 0.6117647,
+        blue: 0.99607843,
+        alpha: 1.0,
+    ),
+    divider: (
+        red: 0.8318802,
+        green: 0.8318715,
+        blue: 0.8090188,
+        alpha: 0.2,
+    ),
+    on: (
+        red: 0.8318802,
+        green: 0.8318715,
+        blue: 0.8090188,
+        alpha: 1.0,
+    ),
+    disabled: (
+        red: 0.66336143,
+        green: 0.57746667,
+        blue: 0.7633233,
+        alpha: 0.125,
+    ),
+    on_disabled: (
+        red: 0.8318802,
+        green: 0.8318715,
+        blue: 0.8090188,
+        alpha: 0.65,
+    ),
+    border: (
+        red: 0.7874787,
+        green: 0.6994349,
+        blue: 0.8914889,
+        alpha: 1.0,
+    ),
+    disabled_border: (
+        red: 0.7874787,
+        green: 0.6994349,
+        blue: 0.8914889,
+        alpha: 0.5,
+    ),
+)