Start proper stream support.

src/base/core/data_structures/String.cpp

@@ -146,6 +146,17 @@ void String::to_bytes(Vector<Byte>& bytes) const
     }
 }
 
+size_t String::length(const char* arr)
+{
+    size_t len{0};
+    while(*arr != '\0')
+    {
+        arr++;
+        len++;
+    }
+    return len;
+}
+
 void String::append(const Vector<Byte>& data)
 {
     if (data.empty())