Add new Lb2ppbar(n) line

Adding in preliminary line for combination of ppbar pair dedicated for decay Lb -> pp~n. This analysis is new and so lines were not included in last stripping of data.

Lines added: Lb2ppbarLb2Charged2BodyLine, Lb2ppbarLb2Charged2BodySSLine

Rates and Timing Results:

 |                                                                       *Decision name*|*Rate,%*|*Accepted*|*Mult* |*ms/evt*|
 |!StrippingLb2ppbarnLb2Charged2BodyLine                                                |  0.0443|        75|  1.000|   3.315|
 |!StrippingLb2ppbarnLb2Charged2BodySSLine                                              |  0.0118|        20|  1.000|   0.069|
 |!StrippingLb2ppbarnLb2Charged2BodyLine_TIMING                                         |  0.0443|        75|  1.000|   0.056|
 |!StrippingLb2ppbarnLb2Charged2BodySSLine_TIMING                                       |  0.0118|        20|  1.000|   0.055|