Added xml UI for the avfilter.chromanr

data/effects/avfilter/avfilter_chromanr.xml

+<!DOCTYPE kpartgui>
+<effect tag="avfilter.chromanr" id="avfilter.chromanr">
+	<name>Chroma Noise Reduction</name>
+	<description>Reduce chrominance noise.</description>
+	<author>libavfilter</author>
+	<parameter type="constant" name="av.thres" default="30" min="1" max="200">
+                <name>Y+U+V Threshold</name>
+        </parameter>
+	<parameter type="constant" name="av.sizew" default="5" min="1" max="100" decimals="0">
+                <name>Horizontal size</name>
+        </parameter>
+	<parameter type="constant" name="av.sizeh" default="5" min="1" max="100" decimals="0">
+                <name>Vertical size</name>
+        </parameter>
+
+        <parameter type="constant" name="av.stepw" default="1" min="1" max="50" decimals="0">
+                <name>Horizontal step</name>
+        </parameter>
+        <parameter type="constant" name="av.threy" default="200" min="1" max="200" decimals="0">
+                <name>Y threshold</name>
+        </parameter>
+	    <parameter type="constant" name="av.threu" default="200" min="1" max="200" decimals="0">
+                <name>U threshold</name>
+        </parameter>
+        <parameter type="constant" name="av.threv" default="200" min="1" max="200" decimals="0">
+                <name>V threshold</name>
+        </parameter>
+        <parameter type="list" name="av.distance" default="0" paramlist="manhattan;euclidean">
+        <paramlistdisplay>Manhattan,Euclidean</paramlistdisplay>
+                <name>Distance</name>
+        </parameter>
+</effect>