Clicking tag now select gem and scrolls to it, it also resets filters if gem is filtered out, also gem filter creation was refactored

Signed-off-by: nggieber <nggieber@amazon.com>

Code/Tools/ProjectManager/Source/GemCatalog/GemModel.cpp

@@ -54,6 +54,7 @@ namespace O3DE::ProjectManager
         appendRow(item);
 
         const QModelIndex modelIndex = index(rowCount()-1, 0);
+        m_nameToIndexMap[gemInfo.m_displayName] = modelIndex;
         m_nameToIndexMap[gemInfo.m_name] = modelIndex;
     }