Add R1's airdodge and platdrops to modifiers#396

In Rivals 1, you would fall faster with the amount of velocity as when you drop over the edge of a platform and can do platboosting(equivalent to doing platboosting with moonwalk shield dropping in R2).

Rivals 1 also had a different airdodge than R2 where you can act out of your airdodge which can lead to cool combo extensions

It would be awesome if there was a quick airdodge and a quick platdrop to match the mechanics to be on par with Rivals 1’s airdodges and platdrops