Read a file from the filesystem and write its content
to the Object Database as a loose blob
@param id return the id of the written blob
@param repo repository where the blob will be written.
this repository can be bare or not
@param path file from which the blob will be created
@return 0 or an error code
Read a file from the filesystem and write its content to the Object Database as a loose blob
@param id return the id of the written blob @param repo repository where the blob will be written. this repository can be bare or not @param path file from which the blob will be created @return 0 or an error code