Add snippets (#278)

source/behavior/spawn_rules/spawn_rules.json

@@ -1,6 +1,21 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema",
   "$id": "blockception.behavior.spawn_rules",
+  "defaultSnippets": [
+    {
+      "label": "New spawn rule",
+      "body": {
+        "format_version": "${1:1.8.0}",
+        "minecraft:spawn_rules": {
+          "description": {
+            "identifier": "$2:${3:${TM_FILENAME/[\\.].*//}}",
+            "population_control": "${4:ambient}"
+          },
+          "conditions": ["^{$5}"]
+        }
+      }
+    }
+  ],
   "examples": [
     {
       "format_version": "1.8.0",
@@ -13,11 +28,11 @@
   "additionalProperties": false,
   "required": ["format_version", "minecraft:spawn_rules"],
   "properties": {
-    "format_version": { 
+    "format_version": {
       "title": "Format Version",
       "description": "A version that tells minecraft what type of data format can be expected when reading this file.",
       "enum": ["1.8.0", "1.10.0", "1.12.0"]
-     },
+    },
     "minecraft:spawn_rules": {
       "type": "object",
       "title": "Spawn Rules",