Add support for Guinea Bissau TIN

[unho]

• Número de Identificação Fiscal - NIF
• Also Número de Contribuinte
• https://kontaktu.mef.gw/api/public_files/cQ07WYIBVxKCKoELcDhC.pdf

  número de identificação fiscal (NIF) do declarante, com os numeros inteiros positivos de 9 digitos.

Examples:

• 148 examples at https://kontaktu.mef.gw/api/public_files/NQyYToEBVxKCKoELilpl.pdf (attached here just in case)

  510013899
  510010474
  510037259
  510035175
  510013538
  510000665
  510000371
  510009360
  510007406
  510008305
  510012248
  510122175
  510017460
  510004326
  510108075
  510029124
  510014437
  510009590
  510001092
  510005934
  510017738
  510015077
  510020747
  510013600
  510004334
  610000241
  510156215
  510015239
  510029787
  510022871
  510024017
  510019560
  510230830
  510019609
  610002317
  510023126
  510022049
  510021298
  810005697
  510106676
  510009751
  510000720
  810002604
  510008852
  510136974
  510017983
  510179240
  510226220
  510004911
  510002625
  510037372
  810009137
  510143806
  510019390
  810012219
  510014593
  510111350
  910000069
  910222797
  510139060
  510195636
  910000670
  510012825
  510038590
  510030050
  510005713
  910002053
  510129056
  510145248
  510028616
  510036708
  510005330
  510026320
  510114600
  510136648
  510016650
  510028071
  510036686
  510111904
  510012280
  510160468
  510014607
  510025897
  510010377
  510179797
  510115497
  610001396
  510108946
  510132782
  510116965
  510000134
  510178880
  510012078
  510131913
  510129242
  510002676
  510180205
  510001068
  510175848
  510001009
  510003141
  510102956
  510175619
  610001280
  510024947
  510002307
  510027040
  510030947
  510006183
  510038298
  610002295
  510039537
  910000093
  510010369
  510184030
  510114296
  510171214
  510003370
  510010741
  510010750
  510107389
  510124623
  510031404
  510170412
  510163432
  510130143
  510008143
  910003572
  510014542
  510027482
  510023274
  810008173
  910002614
  510107990
  510103928
  510014070
  510036597
  510026397
  510018599
  510007252
  510022847
  510009611
  510018025
  510009557
  510036597
  510036970
  510135358
  610 000 519

• 51 000 4610 from https://audicontabissau.gw/wp-content/uploads/2020/01/AC-CURRICULUM-VITAE-PORTUGU%C3%8AS-JANEIRO-2019-1.pdf
• 510140343 from http://www.ipt.gw/wp-content/uploads/2019/05/Tabela-Propinas-Assinada-ipt.pdf
• 510010474 from https://arn.gw/activeapp/wp-content/uploads/2021/01/scan0456.pdf
• 510119220 from http://consulmarbissau.com/sites/default/files/files/CONDIC%CC%A7O%CC%83ES%20GERAIS.pdf
• Possibly 510000665 from https://www.bao.gw/geral-aviso-legal
• Could not find any more examples.