Refactor app list to be non-static and sorted in alphabetical order

Limelight/Database/App.h

@@ -17,6 +17,8 @@ NS_ASSUME_NONNULL_BEGIN
 
 @property BOOL isRunning;
 
+- (NSComparisonResult)compareName:(App *)other;
+
 @end
 
 NS_ASSUME_NONNULL_END

Limelight/Database/App.m

@@ -13,4 +13,8 @@
 
 @synthesize isRunning;
 
+- (NSComparisonResult)compareName:(App *)other {
+    return [self.name caseInsensitiveCompare:other.name];
+}
+
 @end