B2OC: B2DsstGamma lines

Draft:

The lines we would like to add:

• B -> Ds* gamma
• B -> Ds gamma
• B -> Ds* pi0
• B -> Ds pi0

The rates are reported below:

• LAZY_AND: SpruceB2OC_BuToDspGamma_DspToHHHDecisionWithOutput #=100000 Sum=2 Eff=|(0.002000000 +- 0.00141420)%|
• LAZY_AND: SpruceB2OC_BuToDspPi0Merged_DspToHHHDecisionWithOutput #=100000 Sum=2 Eff=|(0.002000000 +- 0.00141420)%|
• LAZY_AND: SpruceB2OC_BuToDspPi0Resolved_DspToHHHDecisionWithOutput #=100000 Sum=9 Eff=|(0.009000000 +- 0.00299986)%|
• LAZY_AND: SpruceB2OC_BuToDsstpGamma_DsstpToDspGamma_DspToHHHDecisionWithOutput #=100000 Sum=25 Eff=|(0.02500000 +- 0.00499937)%|
• LAZY_AND: SpruceB2OC_BuToDsstpPi0Merged_DsstpToDspGamma_DspToHHHDecisionWithOutput #=100000 Sum=26 Eff=|(0.02600000 +- 0.00509836)%|
• LAZY_AND: SpruceB2OC_BuToDsstpPi0Resolved_DsstpToDspGamma_DspToHHHDecisionWithOutput #=100000 Sum=58 Eff=|(0.05800000 +- 0.00761356)%|