feat: add text area

AppTextArea.qml

@@ -0,0 +1,18 @@
+import QtQuick
+import DesignSystem
+import QtQuick.Controls.Basic
+import QtQuick.Controls.impl
+
+TextArea {
+    id: control
+
+    background: Rectangle {
+        implicitWidth: 200
+        implicitHeight: 40
+        border.width: control.activeFocus ? 2 : 1
+        color: control.palette.base
+        border.color: control.activeFocus ? control.palette.highlight : control.palette.mid
+
+        radius: Theme.radius
+    }
+}

CMakeLists.txt

@@ -25,6 +25,7 @@ set(plain_qml_files
   AppWindow.qml
   AppComboBox.qml
   AppTextField.qml
+  AppTextArea.qml
   AppImage.qml
   AppLink.qml
   AppWarning.qml