Added new lines QEE/LFVExotica
This MR adds 4 new lines from QEE/LFVExotica (Higgs -> e mu; opposite-sign, same-sign; prompt, displaced) to the Leptonic stream. Prelim check over 10kevt looks fine.
StrippingReport INFO Event 10000, Good event 8816
| *Decision name*|*Rate,%*|*Accepted*| *Mult*|*ms/evt*|
|_StrippingGlobal_ | 0.5331| 47| | 19.842|
|_StrippingSequenceStreamLeptonic_ | 0.5331| 47| | 19.833|
|!StrippingLFVExoticaPromptLine | 0.1815| 16| 1.000| 15.492|
|!StrippingLFVExoticaSameSignPromptLine | 0.0907| 8| 1.875| 0.447|
|!StrippingLFVExoticaDetachedLine | 0.1928| 17| 1.000| 0.817|
|!StrippingLFVExoticaSameSignDetachedLine | 0.0340| 3| 1.000| 0.324|
|!StrippingLFVExoticaPromptLine_TIMING | 0.1815| 16| 1.000| 0.218|
|!StrippingLFVExoticaSameSignPromptLine_TIMING | 0.0454| 4| 3.000| 0.123|
|!StrippingLFVExoticaDetachedLine_TIMING | 0.1928| 17| 1.000| 0.238|
|!StrippingLFVExoticaSameSignDetachedLine_TIMING | 0.0340| 3| 1.000| 0.233|