QmlDesigner: Update the tooltips for QDS Component Components

Update the tooltip text for Qt Design Studio component
type of components.

Fixes: QDS-8313
Change-Id: I503e10a60f1d59f9a2e6b693c9f886254c3dabcd
Reviewed-by: Mats Honkamaa <mats.honkamaa@qt.io>
Reviewed-by: Thomas Hartmann <thomas.hartmann@qt.io>

src/plugins/qmldesigner/qtquickplugin/quick.metainfo

@@ -547,6 +547,7 @@ MetaInfo {
             version: "2.0"
 
             QmlSource { source: ":/qtquickplugin/source/component.qml" }
+            toolTip: qsTr("Allows you to define components inline, within a QML document.")
         }
     }
 
@@ -581,6 +582,7 @@ MetaInfo {
             version: "2.0"
             Property { name: "width"; type: "int"; value: 200; }
             Property { name: "height"; type: "int"; value: 200; }
+            toolTip: qsTr("Allows you to load components dynamically.")
         }
     }
 
@@ -598,6 +600,7 @@ MetaInfo {
             category: "e.Qt Quick - Component"
             libraryIcon: ":/qtquickplugin/images/repeater-icon.png"
             version: "2.0"
+            toolTip: qsTr("Creates a number of copies of the same item.")
         }
     }