Update .gitignore for windows in source build

Change-Id: I57d06e129287955a02768130fecf24860698418b
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Reviewed-by: Daniel Teske <daniel.teske@digia.com>

.gitignore

@@ -28,11 +28,15 @@ moc_*.cpp
 ui_*.h
 qrc_*.cpp
 Thumbs.db
+*.res
+*.rc
+*.embed.manifest
 
 # qtcreator generated files
 *.pro.user*
 *.qmlproject.user*
 *.pluginspec
+*.json
 src/app/Info.plist
 app_version.h
 src/plugins/coreplugin/ide_version.h