Method name is added to exception message. (#787)

### Motivation, Context and Description
This PR adds function/method name into exception message that is thrown
if a native function, marked with SKFunctionInputAttribute, doesn't have
an input parameter of string type. The method name can be useful for
debugging and troubleshooting.

dotnet/src/SemanticKernel/SkillDefinition/SKFunction.cs

@@ -513,7 +513,7 @@ private static MethodDetails GetMethodDetails(MethodInfo methodSignature, object
 
         if (!result.HasSkFunctionAttribute || skFunctionAttribute == null)
         {
-            log?.LogTrace("Method {0} doesn't have SKFunctionAttribute", result.Name);
+            log?.LogTrace("Method '{0}' doesn't have '{1}' attribute.", result.Name, typeof(SKFunctionAttribute).Name);
             return result;
         }
 
@@ -554,9 +554,8 @@ private static MethodDetails GetMethodDetails(MethodInfo methodSignature, object
         else if (skMainParam != null)
         {
             // The developer used [SKFunctionInput] on a function that doesn't support a string input
-            throw new KernelException(
-                KernelException.ErrorCodes.InvalidFunctionDescription,
-                "The function doesn't have a string parameter, do not use " + typeof(SKFunctionInputAttribute));
+            var message = $"The method '{result.Name}' doesn't have a string parameter, do not use '{typeof(SKFunctionInputAttribute).Name}' attribute.";
+            throw new KernelException(KernelException.ErrorCodes.InvalidFunctionDescription, message);
         }
 
         // Handle named arg passed via the SKContext object
@@ -570,7 +569,7 @@ private static MethodDetails GetMethodDetails(MethodInfo methodSignature, object
 
         result.Description = skFunctionAttribute.Description ?? "";
 
-        log?.LogTrace("Method {0} found", result.Name);
+        log?.LogTrace("Method '{0}' found.", result.Name);
 
         return result;
     }
@@ -678,13 +677,13 @@ private static (DelegateTypes type, Delegate function, bool hasStringParam) GetD
         {
             throw new KernelException(
                 KernelException.ErrorCodes.FunctionTypeNotSupported,
-                $"Function {method.Name} has an invalid signature 'Func<SKContext, SKContext>'. " +
+                $"Function '{method.Name}' has an invalid signature 'Func<SKContext, SKContext>'. " +
                 "Please use 'Func<SKContext, Task<SKContext>>' instead.");
         }
 
         throw new KernelException(
             KernelException.ErrorCodes.FunctionTypeNotSupported,
-            $"Function {method.Name} has an invalid signature not supported by the kernel");
+            $"Function '{method.Name}' has an invalid signature not supported by the kernel.");
     }
 
     [SuppressMessage("Maintainability", "CA1508:Avoid dead conditional code", Justification = "Delegate.CreateDelegate result can be null")]