Adds single Insight overload to Insight.Group
Adds single Insight overload to Insight.Group

pythonnet does not find the method overload when we only provide one `Insight` instance, that leads to a discrepancy from C# API.

jameschch/Lean,kaffeebrauer/Lean,QuantConnect/Lean,jameschch/Lean,JKarathiya/Lean,Jay-Jay-D/LeanSTP,Jay-Jay-D/LeanSTP,AlexCatarino/Lean,jameschch/Lean,kaffeebrauer/Lean,AlexCatarino/Lean,StefanoRaggi/Lean,JKarathiya/Lean,QuantConnect/Lean,StefanoRaggi/Lean,AnshulYADAV007/Lean,jameschch/Lean,kaffeebrauer/Lean,JKarathiya/Lean,StefanoRaggi/Lean,AlexCatarino/Lean,Jay-Jay-D/LeanSTP,kaffeebrauer/Lean,StefanoRaggi/Lean,JKarathiya/Lean,AlexCatarino/Lean,Jay-Jay-D/LeanSTP,AnshulYADAV007/Lean,Jay-Jay-D/LeanSTP,AnshulYADAV007/Lean,QuantConnect/Lean,AnshulYADAV007/Lean,StefanoRaggi/Lean,jameschch/Lean,AnshulYADAV007/Lean,kaffeebrauer/Lean,QuantConnect/Lean