Reorganize supported devices list.

[tstenner]

Taken from labstreaminglayer/App-BrainAmpSeries#5:

[..] One idea I had was to reorganize the "Supported devices list" in the documentation into a table like this:

Device	Support status	Code	Download
BrainAmp	Official	Github	Download ↓
Some other device	untested	Github	↓

This is mainly to steer users directly to the release page instead of the repository page and avoid questions about the build system from users who just want some binaries.

[cboulay]

It looks good, but we'd need another column for "More Info" for devices that don't have code and don't have a direct download. For example, devices with LSL support integrated into the vendor-provided software that can only be accessed by logging in to your licensed account on their webpage.