Group norm (#417)

* Add groupnorm example by layernorm
1.  Reference is not ready
2. shape of gamma and beta need to be fix

* Let shape of gamma and beta can be same as x

* Modify test, instance and client example

* [What] Fix bug of layernorm for greater than 2 dimension.
[Why] We need to get upper length from merge transform instead of embed transform.

* Add reference for groupnorm

* Fuse sigmoid after groupnorm

* [What] Rename original layernorm into layernorm2d
[Why] Prepare to add groupnorm using layernorm5d

* clang-format

* Add groupnorm test

* Refine error message

* Add groupnorm ckProfiler

* Test groupnorm kernel from device_instance

* update example

* upadte profiler

* Fix test naming

* Fix argc number

* Move descriptor and sweeponce to argument for quick debugging

Co-authored-by: Chao Liu <chao.liu2@amd.com>

include/ck/tensor_operation/gpu/element/unary_element_wise_operation.hpp

@@ -232,6 +232,21 @@ struct Gelu
     }
 };
 
+struct Sigmoid
+{
+    template <typename T>
+    __host__ __device__ void operator()(T& y, const T& x) const
+    {
+        static_assert(is_same<T, float>::value || is_same<T, double>::value ||
+                          is_same<T, ck::half_t>::value,
+                      "Data type is not supported by this operation!");
+
+        y = 1 / (ck::type_convert<T>(1) + exp(-x));
+    };
+
+    int32_t divider_ = 1;
+};
+
 } // namespace element_wise
 } // namespace tensor_operation
 } // namespace ck