Convert randpicks file from segchopr format to swfscDAS format
Value
Data frame with one line for each continuous effort section in x.segdata,
  and two columns: effort_section and randpicks
Details
Past DAS processing code (segchopr) only recorded the generated random values,
  whereas swfscDAS randpicks files contain one line for each continuous effort section.
  See das_chop_equallength for more details about the swfscDAS randpicks format.
  This function 'converts' a randpicks data frame generated by segchopr
  to a data frame that meets the swfscDAS randpicks format requirements