[Feature] Dynamic block obstacle

[RoddieKieley]

Is your feature request related to a problem? Please describe.
At the moment all the block obstacles are static. It would be more interesting if they were dynamic in some way.

Describe the solution you'd like
Describe alternatives you've considered
Two potential ideas to add more life to the block obstacles:

• Add code that utilizes the bottom sections to make that configurable, i.e. how many bottom sections would be there on the bottom thus changing the overall height.
• Use a tween like with the firewall obstacle so that the block would raise up and then fall suddenly back to the ground with a bang and a shake.

Additional context
This is a popular mechanism in other 2D platformers / runners.