Qml/ModPage: add icon

The icon will change depending on the type of mod that was installed
Only if it was installed from GameBanana, otherwise it will show
dma's logo or a generic one

src/leek/qml/ModPage.qml

@@ -31,12 +31,22 @@ Kirigami.Page {
 
             GridLayout {
                 id: headerContents
-                ColumnLayout {
-                    Controls.Label {
-                        text: `Name: ${mod.name}`
+                RowLayout {
+                    // Icon
+                    Kirigami.Icon {
+                        implicitHeight: Kirigami.Units.iconSizes.huge
+                        implicitWidth: implicitHeight
+                        source: "package-x-generic"
                     }
-                    Controls.Label {
-                        text: `Author placeholder`
+
+                    // Name and author
+                    ColumnLayout {
+                        Controls.Label {
+                            text: `Name: ${mod.name}`
+                        }
+                        Controls.Label {
+                            text: `Author placeholder`
+                        }
                     }
                 }
             }