Add first draft of extension method
Add first draft of extension method

Add first draft of extension method to class IndicatorExtensions.
Will complete the method in a future commit.

squideyes/Lean,QuantConnect/Lean,Phoenix1271/Lean,StefanoRaggi/Lean,QuantConnect/Lean,young-zhang/Lean,Jay-Jay-D/LeanSTP,devalkeralia/Lean,JKarathiya/Lean,Mendelone/forex_trading,AnshulYADAV007/Lean,kaffeebrauer/Lean,QuantConnect/Lean,AnshulYADAV007/Lean,tomhunter-gh/Lean,andrewhart098/Lean,AnObfuscator/Lean,bizcad/Lean,JKarathiya/Lean,Jay-Jay-D/LeanSTP,Mendelone/forex_trading,JKarathiya/Lean,AlexCatarino/Lean,jameschch/Lean,andrewhart098/Lean,AnshulYADAV007/Lean,AlexCatarino/Lean,squideyes/Lean,Mendelone/forex_trading,jameschch/Lean,devalkeralia/Lean,JKarathiya/Lean,squideyes/Lean,kaffeebrauer/Lean,tomhunter-gh/Lean,AnObfuscator/Lean,AnObfuscator/Lean,tomhunter-gh/Lean,squideyes/Lean,kaffeebrauer/Lean,AlexCatarino/Lean,young-zhang/Lean,AnshulYADAV007/Lean,bizcad/Lean,young-zhang/Lean,AlexCatarino/Lean,Jay-Jay-D/LeanSTP,redmeros/Lean,jameschch/Lean,andrewhart098/Lean,StefanoRaggi/Lean,Jay-Jay-D/LeanSTP,bizcad/Lean,young-zhang/Lean,tomhunter-gh/Lean,AnObfuscator/Lean,redmeros/Lean,jameschch/Lean,StefanoRaggi/Lean,redmeros/Lean,redmeros/Lean,QuantConnect/Lean,andrewhart098/Lean,Phoenix1271/Lean,Phoenix1271/Lean,kaffeebrauer/Lean,StefanoRaggi/Lean,AnshulYADAV007/Lean,Phoenix1271/Lean,kaffeebrauer/Lean,StefanoRaggi/Lean,devalkeralia/Lean,bizcad/Lean,jameschch/Lean,devalkeralia/Lean,Mendelone/forex_trading,Jay-Jay-D/LeanSTP