The curl backend is using the http response header "last-modified" to
call the TransferDownloadHandler::HandleObjectLastWriteTime. However,
the cloud provider decides what format last-modified should be in and
the HandleObjectLastWriteTime dictates ISO8601. The curl backend
therefor needs a converter function given by the cloud specific
IOManager implementation.

Adding support for Azure source with connection string or using Azure
presign. Now its possible to do something like this:

SEGYImport.exe
        --azure-presign-base <BLOBSASURL>,
        --azure-presign-suffix <SASTOKEN>
        --azure-presign-source-base <SOMEOTHERBLOBSASURL>
        --azure-presign-source-suffix <SOMEOTHERSASTOKEN>
        NAME_OF_THE_SEG-Y_FILE
This will then read the SEG-Y file from the azure-presign-source-base
location and write the VDS to the azure-presign-base location

And add Azure Presigned (Shared access signature) IOManager as an
implementaion example for how to implement this for other cloud vendors

so we need to handle it as best as we can

Added HandleObjectLastWriteTime() to TransferDownloadHandler class for IOManager. Added LastWriteTime() and FileOrObjectName() to Dataprovider class.

Added code to detect the primary and secondary step so we can import decimated data. Added some more checks to avoid bad imports.

Also add a SEGYUtils library that both SEGYImport and SEGYExport link
with

Renamed ConvertEndianness to ConvertToEndianness and added ConvertFromEndianness which is used by SEGYImport to support any endianness for the data.

Correct handling of endianness in SEGYExport. Preliminary support for crossline-oriented seismic and overrides for endianness and data sample format.