feat: add simple logo

It maintains a discreet presence with dark & light mode.

AppLogo.qml

@@ -0,0 +1,7 @@
+import QtQuick
+
+Image {
+  sourceSize.width: 70
+
+  source: Theme.darkTheme ? "qrc:/live.flowy/imports/DesignSystem/logos/FLOWY-3.svg" : "qrc:/live.flowy/imports/DesignSystem/logos/FLOWY-5.svg"
+}

CMakeLists.txt

@@ -18,6 +18,7 @@ set(plain_qml_files
   AppHeadline.qml
   AppSubHeadline.qml
   AppLabel.qml
+  AppLogo.qml
 )
 set(qml_singletons
   Fonts.qml
@@ -84,6 +85,7 @@ set(icons
     app-icons/vs-code.svg
     app-icons/ghostty.png
     app-icons/outlook.svg
+    logos/FLOWY-3.svg
     logos/FLOWY-4.svg
     logos/FLOWY-5.svg
     logos/FLOWY-6.svg

gallery/Main.qml

@@ -30,6 +30,8 @@ ApplicationWindow {
       anchors.top: parent.top
       anchors.margins: 10
 
+      AppLogo {}
+
       AppPrimaryButton {
         text: "Toggle theme"
         onClicked: {