The package you downloaded are standalone. You cannot install them into S32DS.
Platform Software Integration examples are available standalone only. Run
the .exe file on a Windows PC to install them. Note that the release you
obtained depends on RTD 2.0.0 HF2, not P03. Install the verified version to
avoid problems.
To install RTD as an S32DS plugin, download the file that has the .zip extension
and follow the instructions in the package Release Notes.
Hope this helps,
Platon