Tests: Add a test to check that we are able to segment a long recombination.

This test is a real recombination and should be properly segmented

algo/tests/vidjil_long_segment.should_get

+!LAUNCH: ../../vidjil -G ../../germline/IGH -d ../../data/long-segmentation.fa 
+
+$ Sequence should be segmented by k-mer segmenter
+e1:SEG_+ -> 1 

data/long-segmentation.fa

+>long-seq
+GCAGCCTGAGATCTGAGGACACAGCCATGTATTACTGTGCAAGATTTTTGAGGATGAGGATTGCGGAGTGGGAGTCGGGGCGTTGAGTGCCCCCGACCGACTTACTACCTTGACTACTGGGGCCAGGGAACCCTGGTCACCGTCTCCTCAGGTAAGCCCTATAGTGAGTCGTATTAAGATCGGAAGAGCACACGTCTGAACTCCAG