fix resetting, add comments

src/ReplicatedStorage/ecs/systems/client/customReset.ts

@@ -0,0 +1,18 @@
+import { World, useEvent } from "@rbxts/matter"
+import { StarterGui } from "@rbxts/services"
+import { clientState } from "ReplicatedStorage/ecs/state"
+import { getEvent } from "ReplicatedStorage/remotes"
+
+const resetButtonCallback = new Instance("BindableEvent")
+StarterGui.SetCore("ResetButtonCallback", resetButtonCallback)
+
+getEvent("resetButton")
+
+function customReset(_: World, _client: clientState): void {
+    const resetButtonEvent = getEvent("resetButton")
+    for (const [,] of useEvent(resetButtonCallback, "Event")) {
+        resetButtonEvent.FireServer()
+    }
+}
+
+export = customReset