added builder functions for full paths

bsp_q7s/memory/FileSystemHandler.cpp

@@ -121,16 +121,25 @@ ReturnValue_t FileSystemHandler::initialize() {
 
 ReturnValue_t FileSystemHandler::appendToFile(const char *repositoryPath, const char *filename,
         const uint8_t *data, size_t size, uint16_t packetNumber, void *args) {
+    // A double slash between repo and filename should not be an issue, so add it in any case
+    std::string fullPath = currentMountPrefix + std::string(repositoryPath) + "/" +
+            std::string(filename);
     return HasReturnvaluesIF::RETURN_OK;
 }
 
 ReturnValue_t FileSystemHandler::createFile(const char *repositoryPath, const char *filename,
         const uint8_t *data, size_t size, void *args) {
+    // A double slash between repo and filename should not be an issue, so add it in any case
+    std::string fullPath = currentMountPrefix + std::string(repositoryPath) + "/" +
+            std::string(filename);
     return HasReturnvaluesIF::RETURN_OK;
 }
 
 ReturnValue_t FileSystemHandler::deleteFile(const char *repositoryPath, const char *filename,
         void *args) {
+    // A double slash between repo and filename should not be an issue, so add it in any case
+    std::string fullPath = currentMountPrefix + std::string(repositoryPath) + "/" +
+            std::string(filename);
     return HasReturnvaluesIF::RETURN_OK;
 }