Add getPlayActions to base card class (#2163)
Add getPlayActions to base card class (#2163)

Previously, it was assumed that the Player.playCard method would only be
called with draw card objects. However, as we've generalized click
behavior it can now be reached with both plot and agenda card objects,
which was crashing. Adding a default implementation in BaseCard that
returns no possible play actions prevents this crash.

Fixes THRONETEKI-2A3
ystros/throneteki,cryogen/throneteki,cryogen/throneteki