refactor(theme): centralize theme

config/Theme.qml

@@ -0,0 +1,60 @@
+pragma Singleton
+pragma ComponentBehavior: Bound
+
+import QtQuick
+import Quickshell
+
+Singleton {
+    id: root
+
+    property int margin: 8
+    property int radius: 8
+    property int spacing: 8
+    property int padding: 8
+    property int duration: 150
+
+    font: QtObject {
+        property string family: "FiraCode Nerd Font Mono SemBd"
+        property int pointSize: 9
+        readonly property int body: pointSize - 1
+        readonly property int caption: pointSize - 2
+    }
+
+    colors: QtObject {
+        property color accent: "#6791c9"
+        property color foreground: "#ffffff"
+        property color background: "#101213"
+        property color inActive: "#1b1d1e"
+    }
+
+    bar: QtObject {
+        property int thickness: 10
+        property int height: 50
+    }
+
+    workspaces: QtObject {
+        property int height: 15
+        property int radius: 1000
+        property real activeWidthRatio: 2.3
+    }
+
+    cava: QtObject {
+        property int width: 96
+        property int height: 32
+        property int innerMargin: 8
+        property int barSpacing: 3
+        property int barMinHeight: 2
+    }
+
+    tray: QtObject {
+        property int iconSize: 16
+    }
+
+    notification: QtObject {
+        property int width: 420
+        property int iconSize: 40
+        property int borderWidth: 1
+        property int textSpacing: 2
+        property real bodyOpacity: 0.8
+    }
+}