Add PlaceholderResolutionException for unresolved placeholders

Introduced PlaceholderResolutionException in the ReC.Application.Common.Exceptions namespace. This exception provides detailed context when a placeholder cannot be resolved due to a missing property with a specific column name, including the placeholder, column name, and input string.

src/ReC.Application/Common/Exceptions/PlaceholderResolutionException.cs

@@ -0,0 +1,11 @@
+namespace ReC.Application.Common.Exceptions;
+
+public class PlaceholderResolutionException(string placeholder, string columnName, string input)
+    : Exception($"Failed to resolve placeholder '{placeholder}'. No object contains a property with column name '{columnName}'. Input: '{input}'")
+{
+    public string Placeholder { get; } = placeholder;
+
+    public string ColumnName { get; } = columnName;
+
+    public string Input { get; } = input;
+}