Adding Legacy Waves procedural

Legacy Waves procedural and 2 utiilty graphs added.

This procedural has a limit of 8 waves. It accepts higher number of waves as input, but will return the max of 8 waves always.

contrib/adsk/libraries/adsklib/adsklib_legacy_defs.mtlx

@@ -130,6 +130,44 @@
     <output name="out" type="color3" />
   </nodedef>
 
+  <nodedef name="ND_util_sinewave_float" node="util_sinewave">
+    <input name="position" type="vector3" defaultgeomprop="Pobject" />
+    <input name="phase" type="float" value="0" uisoftmin="0.0" uisoftmax="1.0" />
+    <input name="rate" type="float" value="1" uisoftmin="0.0" uisoftmax="10.0" />
+    <output name="out" type="float" />
+  </nodedef>
+
+  <nodedef name="ND_util_wave_float" node="util_wave">
+    <input name="position" type="vector3" defaultgeomprop="Pobject" />
+    <input name="radius" type="float" value="2" uimin="0.0" uisoftmax="10.0" />
+    <input name="seed" type="float" value="0" uimin="0.0" uisoftmax="100.0" />
+    <input name="wavemin" type="float" value="1" uimin="0.0" uisoftmax="100.0" />
+    <input name="wavemax" type="float" value="5" uimin="0.0" uisoftmax="100.0" />
+    <input name="phase" type="float" value="0" uisoftmin="0.0" uisoftmax="1.0" />
+    <input name="distribution3d" type="boolean" value="false" />
+    <input name="fade" type="boolean" value="false" />
+    <output name="out" type="float" />
+  </nodedef>
+
+  <nodedef name="ND_legacy_waves" node="legacy_waves">
+    <input name="waves" type="float" value="4.5" uimin="0.0" uisoftmax="8" />
+    <input name="position" type="vector3" defaultgeomprop="Pobject" />
+    <input name="radius" type="float" value="5" uimin="0.0" uisoftmax="10.0" />
+    <input name="seed" type="float" value="0" uimin="0.0" uisoftmax="100.0" />
+    <input name="wavemin" type="float" value="1" uimin="0.0" uisoftmax="100.0" />
+    <input name="wavemax" type="float" value="5" uimin="0.0" uisoftmax="100.0" />
+    <input name="phase" type="float" value="0" uisoftmin="0.0" uisoftmax="1.0" />
+    <input name="distribution3d" type="boolean" value="false" />
+    <input name="fade" type="boolean" value="false" />
+    <input name="offset_x" type="float" value="0" uisoftmin="0.0" uisoftmax="1.0" />
+    <input name="offset_y" type="float" value="0" uisoftmin="0.0" uisoftmax="1.0" />
+    <input name="offset_z" type="float" value="0" uisoftmin="0.0" uisoftmax="1.0" />
+    <input name="rotate_x" type="float" value="0" uisoftmin="0.0" uisoftmax="360" />
+    <input name="rotate_y" type="float" value="0" uisoftmin="0.0" uisoftmax="360" />
+    <input name="rotate_z" type="float" value="0" uisoftmin="0.0" uisoftmax="360" />
+    <output name="out" type="color3" />
+  </nodedef>
+
   <!-- 
       =============================================
       Nodedefs for Autodesk Legacy Material Classes