Safe guard for missing projects 

Adds a safe guard for launches done for a missing or a project that does
not have a Thym nature

Signed-off-by: Gorkem Ercan <gorkem.ercan@gmail.com>
correct the friend declaration

Corrects the typo on the friend declaration for ios.ui plugin

Signed-off-by: Gorkem Ercan <gorkem.ercan@gmail.com>
Set iOS SDK correctly

Changes the way ios sdks retrieved on IOSSimOptionsTab so that viewer is
used to select the previousl selected SDK

Fixes [JBIDE-17399] 

Signed-off-by: Gorkem Ercan <gorkem.ercan@gmail.com>