FastScreen 0.1.5 - GPU Hardware Scaling

FastScreen 0.1.5: D3D11 GPU bilinear scaling via fullscreen-quad blit. Full desktop captured into SRV, scaled to RenderTarget on GPU, only small staging texture mapped for CPU readback. New Java API: startStream(x,y,w,h,scaleW,scaleH) and setScale(scaleW,scaleH).