Improve manually added Steam app detection heuristic to prevent FPs on apps with "Steam" in the name

Limelight/Database/TemporaryApp.h

@@ -13,6 +13,7 @@
 
 @property (nullable, nonatomic, retain) NSString *id;
 @property (nullable, nonatomic, retain) NSString *name;
+@property (nullable, nonatomic, retain) NSString *installPath;
 @property (nonatomic)                   BOOL hdrSupported;
 @property (nullable, nonatomic, retain) TemporaryHost *host;