feat: add initial People Playground mod development kit

extracted_wiki_content/snippets/spawn_particles_on_activation.txt

@@ -0,0 +1,23 @@
+URL: https://wiki.studiominus.nl/snippets/spawnParticle.html
+Title: People Playground Modding - Spawn particles on activation
+==================================================
+
+Spawn particles on activation
+This code snippet shows how to spawn the built-in particle effects when the object is activated.
+ModAPI.Register(new Modification()
+{
+    //set item details
+    OriginalItem = ModAPI.FindSpawnable("Knife"),
+    NameOverride = "Epic knife that sparks when you use it",
+    DescriptionOverride = "not a single soul knows why this exists",
+    ThumbnailOverride = ModAPI.LoadSprite("sparkknife_view.png"),
+    
+    AfterSpawn = (Instance) =>
+    {
+        //add a UseEventTrigger and set its action
+        Instance.AddComponent<UseEventTrigger>().Action = () => {
+          //spawn an effect by the name of "Spark" at the transform position
+          ModAPI.CreateParticleEffect("Spark", Instance.transform.position);
+        };
+    }
+});