New mutation species plant, Lemoon Tree (#22023)

* Adding Lemoon as lemon's mutation

* Adding lemoon cake

* remove tag that forget to delete

Resources/Textures/Objects/Specific/Hydroponics/lemoon.rsi/meta.json

@@ -0,0 +1,41 @@
+{
+    "version": 1,
+    "license": "CC-BY-SA-3.0",
+    "copyright": "Taken and resprite from https://github.com/vgstation-coders/vgstation13/commit/1dbcf389b0ec6b2c51b002df5fef8dd1519f8068",
+    "size": {
+        "x": 32,
+        "y": 32
+    },
+    "states": [
+        {
+            "name": "dead"
+        },
+        {
+            "name": "harvest"
+        },
+        {
+            "name": "produce"
+        },
+        {
+            "name": "seed"
+        },
+        {
+            "name": "stage-1"
+        },
+        {
+            "name": "stage-2"
+        },
+        {
+            "name": "stage-3"
+        },
+        {
+            "name": "stage-4"
+        },
+        {
+            "name": "stage-5"
+        },
+        {
+            "name": "stage-6"
+        }
+    ]
+}