Update FLStock and FLIndex objects using a gadget simulation run output

This function translates a gadget output object for a given gadgetYear year and stockTitle stock and inserts it to the FLR objects (fl_stock and fl_index).

updateFLStock(stockTitle, out, gadgetYear, fl_stock, fl_index, globalparams)

Arguments

stockTitle	a string of gadget stock name
out	gadget simulation output object. Normally is the output of [runYear()]
gadgetYear	gadget year target
fl_stock	an existing FLStock object. Normally produced by [runUntil()]
fl_index	an existing FLIndex object. Normally produced by [runUntil()]
globalparams	a list object of parameters to aid gadget to FLR objects generation (See this page vignette("gadget-flr", package = "gadgetr") for an example)