Android: Improve "Add new AVD" dialog

* Re-organize the implementation to create a new AVD
* Use SystemImage instead of SdKPlatform because now
an SdkPlatform can be installed partially with a SystemImage.
The current implementation does not consider the this case,
thus we end up with an uncomplete list of installed system images.
* Add Device definitions with categories (phone, tablet, tv, etc.)
to the creation process (check -d arg in avdmanager create avd).

Task-number: QTCREATORBUG-23284
Change-Id: Id02a71ad452fb423fa2781d06ef3fcf2afa328a9
Reviewed-by: Alessandro Portale <alessandro.portale@qt.io>

src/plugins/android/androidsettingswidget.cpp

@@ -260,7 +260,8 @@ QVariant AvdModel::data(const QModelIndex &index, int role) const
             return cpuAbis.isEmpty() ? QVariant() : QVariant(cpuAbis.first());
         }
         case 3:
-            return currentRow.avdDevice;
+            return currentRow.avdDevice.isEmpty() ? QVariant("Custom")
+                                                  : currentRow.avdDevice;
         case 4:
             return currentRow.avdTarget;
         case 5:
@@ -556,7 +557,7 @@ void AndroidSettingsWidget::openOpenJDKDownloadUrl()
 void AndroidSettingsWidget::addAVD()
 {
     disableAvdControls();
-    CreateAvdInfo info = AvdDialog::gatherCreateAVDInfo(this, m_sdkManager.get());
+    CreateAvdInfo info = AvdDialog::gatherCreateAVDInfo(this, m_sdkManager.get(), m_androidConfig);
 
     if (!info.isValid()) {
         enableAvdControls();