feat(string): add CTStringView and CTString concepts

Redcraft.Utility/Source/Public/String/String.h

@@ -18,6 +18,9 @@ NAMESPACE_MODULE_BEGIN(Utility)
 
 NAMESPACE_PRIVATE_BEGIN
 
+template <typename T            > struct TIsTString                : FFalse { };
+template <typename T, typename A> struct TIsTString<TString<T, A>> : FTrue  { };
+
 template <typename T>
 class TCStringFromTString final : FNoncopyable
 {
@@ -58,6 +61,8 @@ private:
 
 NAMESPACE_PRIVATE_END
 
+template <typename T> concept CTString = NAMESPACE_PRIVATE::TIsTString<TRemoveCV<T>>::Value;
+
 /** The default string allocator that uses SSO and can be placed right into FAny without dynamically allocating memory. */
 template <CCharType T>
 using TDefaultStringAllocator = TInlineAllocator<(40 - 3 * sizeof(size_t)) / sizeof(T)>;

Redcraft.Utility/Source/Public/String/StringView.h

@@ -20,9 +20,21 @@ NAMESPACE_REDCRAFT_BEGIN
 NAMESPACE_MODULE_BEGIN(Redcraft)
 NAMESPACE_MODULE_BEGIN(Utility)
 
+template <CCharType T>
+class TStringView;
+
 template <CCharType T, CAllocator<T> Allocator>
 class TString;
 
+NAMESPACE_PRIVATE_BEGIN
+
+template <typename T> struct TIsTStringView                 : FFalse { };
+template <typename T> struct TIsTStringView<TStringView<T>> : FTrue  { };
+
+NAMESPACE_PRIVATE_END
+
+template <typename T> concept CTStringView = NAMESPACE_PRIVATE::TIsTStringView<TRemoveCV<T>>::Value;
+
 /**
  * The class template TStringView describes an object that can refer to a constant contiguous sequence of char-like objects
  * with the first element of the sequence at position zero. Provides a set of convenient string processing functions.
@@ -506,8 +518,8 @@ public:
 	/**
 	 * Converts a string into a boolean value.
 	 *
-	 * - 1, "true",  "True",  "TRUE"  and non-zero integers become true.
-	 * - 0, "false", "False", "FALSE" and unparsable values become false.
+	 * - "True"  and non-zero integers become true.
+	 * - "False" and unparsable values become false.
 	 *
 	 * @return The boolean value.
 	 */