Fix to seqindex.cpp to allow tabs in header line

[lcoombe]

• It was reported in Unable to run simulated human HiFi reads goldrush#138 that goldpolish was throwing an error when inputing reads that had tabs separating the id and other information in the header
• The current code handled spaces after the id, but not tabs
• To fix, do another split of the ID in seqindex.cpp by tab characters to account for this
• The test reads file was updated to include reads that space-separated and tab-separated comments in the header line:

(btl) [lcoombe@hpce705 test]$ cat test_reads.fq |sed -n '1~4p' |head -n3
@SRR10028109.589610	st:Z:2024-03-14T09:22:04.350+00:00      RG:Z:ccf17720be1a9a9f8f33443ea90c42b6a7685e7f_dna_r10.4.1_e8.2_400bps_hac@v5.0.0
@SRR10028109.366284 st:Z:2024-03-14T09:22:04.350+00:00	RG:Z:ccf17720be1a9a9f8f33443ea90c42b6a7685e7f_dna_r10.4.1_e8.2_400bps_hac@v5.0.0 test
@SRR10028109.540860