New function: sort_RLum()

[RLumSK]

To complete the functional, we should also add a function sort_RLum().

For what?

• methods for RLum.Analysis-class and Risoe.BINfileData-class objects only
• generic for sort_RLum()
• Should work on a list of RLum.Analysis-class object
• Option fort ascending and descending

How should it work?

• It should work on all slots and class elements the RLum.Data-class objects in a RLum.Analysis() object, means sorting can be done by either using slot entries or @info element entries.
• Slot and @info element sorting can be combined. Slot ordering always supersedes @info ordering.
• Default value is ascending()
• The sorting on Risoe.BINfileData-class is a simple table sorting that maintains the class.

Output

Short return the same output as input, but sorted.

Pseudo example

object
 [RLum.Analysis-class]
	 originator: Risoe.BINfileData2RLum.Analysis()
	 protocol: unknown
	 additional info elements:  0
	 number of records: 7
	 .. : RLum.Data.Curve : 7
	 .. .. : #1 TL | #2 OSL | #3 TL | #4 OSL | #5 TL | #6 OSL | #7 TL

object_sorted <- sort_RLum(object, slot = "records", info_element = NULL, slot_sort = "ascending", info_element_sort = "ascending")
object_sorted 
 [RLum.Analysis-class]
	 originator: Risoe.BINfileData2RLum.Analysis()
	 protocol: unknown
	 additional info elements:  0
	 number of records: 7
	 .. : RLum.Data.Curve : 7
	 .. .. : #1 OSL | #2 OSL | #3 OSL | #4 OSL | #5 TL | #6 TL | #7 TL