Extend adapters overview with preCICE version compatibility

When we release v3 and soon afterwards some of the adapters with compatibility updates, we will be in a state where not all adapters (especially those developed by the community) will be compatible with v3. At the same time, a few users will probably also stick with v2 for longer.

We should extend the [adapters overview page](https://precice.org/adapters-overview.html) with some information on which version of the adapter is compatible with which preCICE version. Probably at least one additional column.