- Move shared memory buffer from kernel runner / buffer device to correction
device itself
  - Wrap the ring buffer around shmem for convenience
  - Reused shared memory segment, just change shape of ndarray view of it
- Rename kernel runner (was PyCudaPipeline) to DsscGpuRunner
- Move all gpu interaction, to DsscGpuRunner
  - Explicit load methods (should control more FSM-like)
- Pulse filter removed temporarily
  - Part of "splitter" section, gets in the way of next refactoring step
  - Will add again after switching to correct first, reshape second operation