web360 0.1.0

Added

• openRendition: stitch and stabilize an Insta360 recording (.insv, one file or a split
  _00_/_10_ pair) in the browser into equirectangular VideoFrames, on WebGPU and WebCodecs.
• Stabilization modes smooth (the default), lock, horizon, follow and off, from the
  camera's fused gyro and accelerometer.
• Rolling-shutter correction, and lens exposure and vignetting matched across the seam.
• Web360Error codes for what stops a rendition: no WebGPU, no WebCodecs, an unsupported codec, a
  missing lens file, an unreadable recording, a decode failure.