Enable explicitly built modules

Kingfisher.xcodeproj/project.pbxproj

@@ -1006,6 +1006,7 @@
 				TVOS_DEPLOYMENT_TARGET = 13.0;
 				WATCHOS_DEPLOYMENT_TARGET = 6.0;
 				XROS_DEPLOYMENT_TARGET = 1.0;
+				_EXPERIMENTAL_SWIFT_EXPLICIT_MODULES = YES;
 			};
 			name = Debug;
 		};
@@ -1066,6 +1067,7 @@
 				TVOS_DEPLOYMENT_TARGET = 13.0;
 				WATCHOS_DEPLOYMENT_TARGET = 6.0;
 				XROS_DEPLOYMENT_TARGET = 1.0;
+				_EXPERIMENTAL_SWIFT_EXPLICIT_MODULES = YES;
 			};
 			name = Release;
 		};