In principle any SWD programmer can be used to program any nRF52 device. This is the only programming/debugging interface on the IC, so it has to be available. We integrate with Segger tools, so I would suggest a Segger debugger or production programmer. If this is during development you can also use a DK as programmer (see Debug output), but you cannot use it in production due to license restrictions.
We do not integrate with ST-Link and it is not officially supported, but it is possible to use it. You can find some threads about it here and elsewhere, for instance this post links to a video tutorial.
