feat: fxaa was missing

Author: drcmda

src/effects/FXAA.tsx

@@ -0,0 +1,4 @@
+import { FXAAEffect } from 'postprocessing'
+import { wrapEffect } from '../util'
+
+export const FXAA = wrapEffect(FXAAEffect)

src/index.tsx

@@ -23,6 +23,7 @@ export * from './effects/SelectiveBloom'
 export * from './effects/Sepia'
 export * from './effects/SSAO'
 export * from './effects/SMAA'
+export * from './effects/FXAA'
 export * from './effects/Texture'
 export * from './effects/ToneMapping'
 export * from './effects/Vignette'