added RegressionChannelAlgorithm(Python)
added RegressionChannelAlgorithm(Python)

AnshulYADAV007/Lean,kaffeebrauer/Lean,redmeros/Lean,kaffeebrauer/Lean,andrewhart098/Lean,AnshulYADAV007/Lean,StefanoRaggi/Lean,JKarathiya/Lean,JKarathiya/Lean,young-zhang/Lean,AlexCatarino/Lean,Jay-Jay-D/LeanSTP,kaffeebrauer/Lean,JKarathiya/Lean,kaffeebrauer/Lean,andrewhart098/Lean,AnshulYADAV007/Lean,andrewhart098/Lean,QuantConnect/Lean,StefanoRaggi/Lean,Jay-Jay-D/LeanSTP,redmeros/Lean,StefanoRaggi/Lean,kaffeebrauer/Lean,JKarathiya/Lean,StefanoRaggi/Lean,jameschch/Lean,jameschch/Lean,young-zhang/Lean,andrewhart098/Lean,AlexCatarino/Lean,redmeros/Lean,Jay-Jay-D/LeanSTP,jameschch/Lean,AlexCatarino/Lean,QuantConnect/Lean,QuantConnect/Lean,young-zhang/Lean,Jay-Jay-D/LeanSTP,redmeros/Lean,Jay-Jay-D/LeanSTP,StefanoRaggi/Lean,QuantConnect/Lean,AnshulYADAV007/Lean,jameschch/Lean,young-zhang/Lean,jameschch/Lean,AlexCatarino/Lean,AnshulYADAV007/Lean