Add a decal to the berry bushes to make them more visible and make the fruits bigger

Suggestions by: @m7600, @wraitii, @JCWasmx86
Reported by: @Yekaterina
Thread:
https://wildfiregames.com/forum/topic/39973-a25-feedbacks-from-testing/

This was SVN commit r25429.

binaries/data/mods/public/art/actors/props/flora/berry_bush.xml

@@ -4,9 +4,15 @@
   <group>
     <variant frequency="1" name="Berry Bush Mesh 01">
       <mesh>gaia/berry_bush_01.dae</mesh>
+      <props>
+        <prop actor="props/structures/decals/berry_mud.xml" attachpoint="root"/>
+      </props>
     </variant>
     <variant frequency="1" name="Berry Bush Mesh 02">
       <mesh>gaia/berry_bush_02.dae</mesh>
+      <props>
+        <prop actor="props/structures/decals/berry_mud.xml" attachpoint="root"/>
+      </props>
     </variant>
   </group>
   <group>

binaries/data/mods/public/art/actors/props/structures/decals/berry_mud.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8"?>
+<actor version="1">
+  <group>
+    <variant>
+      <decal width="10" depth="10" angle="0" offsetx="0" offsetz="0"/>
+      <textures>
+        <texture file="props/decal_berry_mud.png" name="baseTex"/>
+      </textures>
+    </variant>
+  </group>
+  <material>terrain_base.xml</material>
+</actor>