Predefined ColorSchemes

- added support for predefined color schemes
- moved all the code regarding colors generation from wallpaper to the
ColorSchemes service

Assets/ColorSchemes/Nord.json

@@ -0,0 +1,19 @@
+{
+    "mPrimary": "#8fbcbb",
+    "mOnPrimary": "#2e3440",
+    "mSecondary": "#88c0d0",
+    "mOnSecondary": "#2e3440",
+    "mTertiary": "#5e81ac",
+    "mOnTertiary": "#2e3440",
+
+    "mError": "#bf616a",
+    "mOnError": "#2e3440",
+
+    "mSurface": "#2e3440",
+    "mOnSurface": "#d8dee9",
+    "mSurfaceVariant": "#3b4252",
+    "mOnSurfaceVariant": "#e5e9f0",
+    "mOutline": "#434c5e",
+    "mOutlineVariant": "#4c566a",
+    "mShadow": "#2e3440"
+}

Assets/ColorSchemes/Rosepine.json

@@ -0,0 +1,19 @@
+{
+    "mPrimary": "#ebbcba",
+    "mOnPrimary": "#191724",
+    "mSecondary": "#31748f",
+    "mOnSecondary": "#e0def4",
+    "mTertiary": "#9ccfd8",
+    "mOnTertiary": "#191724",
+
+    "mError": "#eb6f92",
+    "mOnError": "#191724",
+
+    "mSurface": "#191724",
+    "mOnSurface": "#e0def4",
+    "mSurfaceVariant": "#26233a",
+    "mOnSurfaceVariant": "#908caa",
+    "mOutline": "#44415a",
+    "mOutlineVariant": "#514e6c",
+    "mShadow": "#191724"
+}

Assets/ColorSchemes/rosepine.json

@@ -1,26 +0,0 @@
-{
-  "backgroundPrimary": "#191724",
-  "backgroundSecondary": "#1f1d2e",
-  "backgroundTertiary": "#26233a",
-
-  "surface": "#1b1927",
-  "surfaceVariant": "#262337",
-
-  "textPrimary": "#e0def4",
-  "textSecondary": "#908caa",
-  "textDisabled": "#6e6a86",
-
-  "accentPrimary": "#ebbcba",
-  "accentSecondary": "#31748f",
-  "accentTertiary": "#9ccfd8",
-
-  "error": "#eb6f92",
-  "warning": "#f6c177",
-
-  "hover": "#c4a7e7",
-  "onAccent": "#191724",
-  "outline": "#44415a",
-
-  "shadow": "#191724",
-  "overlay": "#191724"
-}