Bubble Spawner

I realized the problem with my plant code is that I was handling too many different things at the same time. I separated out initialize (called at construction), begin play, and grow that stabalized it. Sometimes you just need to sleep on it. I also changed collision on seeds to CCD to stop it from falling through the landscape but that might kill performance. I also made it so that seeds stay on the tree until they grow, much better. Also i added a bubble spawner and gave the spawner some vfx.