BetaFPV Meteor75 replacement frame

This a remix of the great design by VHF : https://www.thingiverse.com/thing:5166467

The goal is to have an all in one frame with an integrated battery holder to make it stiffer while keeping a low weight.

This frame is 33.2gr (without battery), close to the 29.3gr of the original Meteor75 frame. So the flight performances are barely the same (I didn't noticed any difference).