Fix: create missing directories before file creation

Changes:
- Added ensureDirectoryExists() helper using _mkdir()
- Automatically create missing directories before file operations
- Added FileHelper include in FileManager
- Removed placeholder files/README.md

Fixes #1793

Trenser.VehicleServiceSystem/Trenser.VehicleServiceSystem/files/README.md

@@ -1 +0,0 @@
-Place files here.

Trenser.VehicleServiceSystem/Trenser.VehicleServiceSystem/utilities/FileHelper.h

@@ -11,10 +11,39 @@ Date: 22-May-2026
 #include <fstream>
 #include <string>
 #include <stdexcept>
+#include <direct.h>
 #include "Vector.h"
 
 namespace util
 {
+    /*
+    Function: ensureDirectoryExists
+    Description: Creates all missing directories present in the given file path.
+                Iteratively parses the path and creates each directory level
+                using _mkdir() before file operations are performed.
+    Parameters:
+        - filePath: const std::string&, relative or absolute file path
+    Returns:
+        - void
+    Throws:
+        - None (_mkdir failures are intentionally ignored if directory already exists)
+    */
+    inline void ensureDirectoryExists(const std::string& filePath)
+    {
+        size_t position = 0;
+
+        while ((position = filePath.find('/', position)) != std::string::npos)
+        {
+            std::string directory = filePath.substr(0, position);
+
+            if (!directory.empty())
+            {
+                (void)_mkdir(directory.c_str());
+            }
+            position++;
+        }
+    }
+
     /*
     Function: loadRecords
     Description: Loads records from a given file path into a vector of strings.
@@ -32,6 +61,7 @@ namespace util
         std::ifstream file(filePath);
         if (!file.is_open())
         {
+            ensureDirectoryExists(filePath);
             std::ofstream newFile(filePath);
             newFile.close();
             file.open(filePath);

Trenser.VehicleServiceSystem/Trenser.VehicleServiceSystem/utilities/FileManager.h

@@ -15,6 +15,7 @@ Date: 22-May-2026
 #include <fstream>
 #include "Vector.h"
 #include "Map.h"
+#include "FileHelper.h"
 
 namespace util
 {
@@ -51,6 +52,7 @@ namespace util
 		std::ifstream file(m_filePath);
 		if (!file.is_open())
 		{
+			ensureDirectoryExists(m_filePath);
 			std::ofstream newFile(m_filePath);
 			newFile.close();
 			file.open(m_filePath);