Generate a markdown table of ecosystem module versions

[achingbrain]

It would be really great if there was an additional step to aegir release that accepted a list of module names from config, generated a table of the currently installed versions of those modules and appended that information to the GitHub release notes that were just created.

This would let us have an automated compatibility matrix for libp2p releases. So we can say that libp2p@0.41.x is compatible with @chainsafe/libp2p-noise@10.x.x for example.