IVGCVSW-6495 Add Support for BATCH_MATMUL to Arm Support Library

* Update feature level support to FL6
* Add ConvertBatchMatMul function

Signed-off-by: Kevin May <kevin.may@arm.com>
Change-Id: I93a77ba869bcddf432229a20e619304305d3982e
diff --git a/shim/sl/canonical/Converter.hpp b/shim/sl/canonical/Converter.hpp
index 8549289..7e4a89e 100644
--- a/shim/sl/canonical/Converter.hpp
+++ b/shim/sl/canonical/Converter.hpp
@@ -40,6 +40,8 @@
 
     static bool ConvertAveragePool2d(const Operation& operation, const Model& model, ConversionData& data);
 
+    static bool ConvertBatchMatMul(const Operation& operation, const Model& model, ConversionData& data);
+
     static bool ConvertBatchToSpaceNd(const Operation& operation, const Model& model, ConversionData& data);
 
     static bool ConvertCast(const Operation& operation, const Model& model, ConversionData& data);