Discovery: add BNb2S2 (1BNb2S2-1)

active_challenge.csv

@@ -415,3 +415,4 @@ OSC-00450,1AuTe2-3,1AuTe2-3,AuTe2,discovery,light,,ok,0.23971,1.91768,8.0,-0.172
 OSC-00451,1B2S2Ta3-1,1B2S2Ta3-1,B2S2Ta3,discovery,light,,ok,0.24719,1.97752,8.0,3.4959,0.9895,,0.0,0.24709,gaussian_dos_scf_mesh,0.03844,,
 OSC-00452,1S2B3Ta4-1,1S2B3Ta4-1,B3S2Ta4,discovery,light,,ok,0.30033,2.40264,8.0,5.6032,0.9368,,0.0556,0.24358,gaussian_dos_scf_mesh,0.04523,,
 OSC-00453,1BMo2Se2-1,1BMo2Se2-1,BMo2Se2,discovery,light,,ok,0.18712,1.49696,8.0,3.3958,0.8906,,0.1111,0.93749,gaussian_dos_scf_mesh,0.04726,,
+OSC-00454,1BNb2S2-1,1BNb2S2-1,BNb2S2,discovery,light,,ok,0.2578,2.0624,8.0,2.0672,0.9911,,0.0,0.36434,gaussian_dos_scf_mesh,0.03844,,