[CK_BUILDER] Test and fix instance traits utils. (#3096)

* Refactor instance_traits_util and add unit tests tests

* Address reviewer comments.

Just adds some TODOs to indicate deprecated layouts in our reflection. Our strategy is to leave the reflection code broad (covering deprecated features), but keep the builder concepts narrow. Once we've removed deprecated features from all instances, we can remove them from reflection.

Also add a comment to the cmake to explain the unit test target test_conv_builder.

* Addressed more reviewer comments.

* Remove duplicate PassThrough::name

Accidentally added this field to the end of the struct, too. The `name` field should be a the start of the struct for consistency.

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

@@ -12,6 +12,8 @@ namespace element_wise {
 
 struct Add
 {
+    static constexpr const char* name = "Add";
+
     template <typename Y, typename X0, typename X1>
     __host__ __device__ constexpr void operator()(Y& y, const X0& x0, const X1& x1) const;
 
@@ -279,6 +281,8 @@ struct Subtract
 
 struct Bilinear
 {
+    static constexpr const char* name = "Bilinear";
+
     Bilinear(float alpha = 1.f, float beta = 1.f) : alpha_(alpha), beta_(beta){};
 
     template <typename Y, typename X0, typename X1>
@@ -353,6 +357,8 @@ struct Bilinear
 
 struct AddClamp
 {
+    static constexpr const char* name = "AddClamp";
+
     AddClamp(float floor = 0.f, float ceil = NumericLimits<float>::Max())
         : floor_(floor), ceil_(ceil){};
 
@@ -442,6 +448,8 @@ struct AddClamp
 
 struct AddRelu
 {
+    static constexpr const char* name = "AddRelu";
+
     template <typename Y, typename X0, typename X1>
     __host__ __device__ constexpr void operator()(Y& y, const X0& x0, const X1& x1) const;
 

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

@@ -565,6 +565,8 @@ struct NormalizeInInfer
 // used by Conv+Bias+BatchNorm+Clamp inference
 struct BiasNormalizeInInferClamp
 {
+    static constexpr const char* name = "BiasNormalizeInInferClamp";
+
     BiasNormalizeInInferClamp(float floor   = 0.f,
                               float ceil    = NumericLimits<float>::Max(),
                               float epsilon = 1e-4)

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

@@ -332,6 +332,8 @@ struct PassThroughPack2
 
 struct PassThrough
 {
+    static constexpr const char* name = "PassThrough";
+
     template <typename Y, typename X>
     __host__ __device__ void operator()(Y& y, const X& x) const;
 
@@ -552,8 +554,6 @@ struct PassThrough
     {
         y = type_convert<bf8_t>(x);
     }
-
-    static constexpr const char* name = "PassThrough";
 };
 
 struct UnaryConvert
@@ -620,6 +620,8 @@ struct ConvertF8RNE
 
 struct Scale
 {
+    static constexpr const char* name = "Scale";
+
     __host__ __device__ Scale(float scale = 1.f) : scale_(scale) {}
 
     template <typename Y, typename X>
@@ -783,6 +785,8 @@ struct UnarySqrt
 
 struct Clamp
 {
+    static constexpr const char* name = "Clamp";
+
     Clamp(float floor = 0.f, float ceil = NumericLimits<float>::Max())
         : floor_(floor), ceil_(ceil){};
 
@@ -856,6 +860,8 @@ struct Clamp
 
 struct Relu
 {
+    static constexpr const char* name = "Relu";
+
     template <typename T>
     __host__ __device__ void operator()(T& y, const T& x) const
     {