Add default feedback bind for N64 P1 (and add copy in test data)

the rest of the default binds are still garbo though

Assets/defctrl.json

@@ -1378,5 +1378,14 @@
 				"Deadzone": 0.1
 			}
 		}
+	},
+	"AllTrollersFeedbacks": {
+		"Nintendo 64 Controller": {
+			"P1 Rumble Pak": {
+				"Channels": "Left+Right",
+				"GamepadPrefix": "X1 ",
+				"Prescale": 1.0
+			}
+		}
 	}
 }

src/BizHawk.Tests/Client.Common/config/SerializationStabilityTests.cs

@@ -45,7 +45,7 @@ namespace BizHawk.Tests.Client.Common.config
 			[typeof(Binding)] = BINDING_SER,
 			[typeof(BindingCollection)] = $@"{{""Bindings"":[{BINDING_SER}]}}",
 			[typeof(CheatConfig)] = $@"{{""DisableOnLoad"":false,""LoadFileByGame"":true,""AutoSaveOnClose"":true,""Recent"":{RECENT_SER}}}",
-			[typeof(FeedbackBind)] = "TODO",
+			[typeof(FeedbackBind)] = @"{""Channels"":""Left+Right"",""GamepadPrefix"":""X1 "",""Prescale"":1.0}",
 			[typeof(MessagePosition)] = @"{""X"":0,""Y"":0,""Anchor"":0}",
 			[typeof(MovieConfig)] = $@"{{""MovieEndAction"":3,""EnableBackupMovies"":true,""MoviesOnDisk"":false,""MovieCompressionLevel"":2,""VBAStyleMovieLoadState"":false,""DefaultTasStateManagerSettings"":{ZWINDER_SER}}}",
 			[typeof(PathEntry)] = PATHENTRY_SER,