Introduced new ParameterMetadata class

With the abstract `ItemMetadata` in place (bec7123), we can now create a new `ParameterMetadata` class, which shares a number of properties with the existing `MemberAccessor` class. This will, eventually, allow the `ItemConfiguration` to accept an `ItemMetadata` class for _either_ parameters _or_ properties, thus giving it access to more configuration data than simply `CustomAttributes`, as it has today. Ultimately, this will prevent us from needing to dynamically check e.g. `IsCompatible` and `IsList` by allowing those values to be added and cached as part of `ItemMetadata.

Author: JeremyCaney

OnTopic/Internal/Reflection/ParameterMetadata.cs

@@ -0,0 +1,40 @@
+/*==============================================================================================================================
+| Author        Ignia, LLC
+| Client        Ignia, LLC
+| Project       Topics Library
+\=============================================================================================================================*/
+using System.Reflection;
+
+namespace OnTopic.Internal.Reflection {
+
+  /*============================================================================================================================
+  | CLASS: PARAMETER METADATA
+  \---------------------------------------------------------------------------------------------------------------------------*/
+  /// <summary>
+  ///   Provides metadata associated with a given parameter.
+  /// </summary>
+  internal class ParameterMetadata: ItemMetadata {
+
+    /*==========================================================================================================================
+    | CONSTRUCTOR
+    \-------------------------------------------------------------------------------------------------------------------------*/
+    /// <summary>
+    ///   Initializes a new instance of the <see cref="ParameterMetadata"/> class associated with a <see cref="ParameterInfo"/>
+    ///   instance.
+    /// </summary>
+    /// <param name="parameterInfo">The <see cref="ParameterInfo"/> associated with this instance.</param>
+    internal ParameterMetadata(ParameterInfo parameterInfo): base (parameterInfo.Name, parameterInfo) {
+      ParameterInfo             = parameterInfo;
+      Type                      = parameterInfo.ParameterType;
+    }
+
+    /*==========================================================================================================================
+    | PARAMETER INFO
+    \-------------------------------------------------------------------------------------------------------------------------*/
+    /// <summary>
+    ///   Gets the <see cref="ParameterInfo"/> associated with this instance of <see cref="ParameterMetadata"/>.
+    /// </summary>
+    public ParameterInfo ParameterInfo { get; }
+
+  } //Class
+} //Namespace