Add-ons for thundead 250 mini fpv

Tiny tweaks to add other motors and landing feetsies to the quadrotor. allows you to mount turnigy talon landing gear (need to clip off a bit of the upper part first) with three m3x0.5 screws per leg. leg holders press fit into frame legs. motor mounts are for turnigy 2204-14t's or similar, and mount with a bunch of random servo horn screws i had lying around.