Format BAN (BETA) - Feat/new ban export format

[nkokla]

Add new routes for extract BAN data to new BAN format.

• GET: /api/extract/cog/ OR POST: /api/extract/cog/

  • Extract all data to BAN Format (⚠ Need test for perf checking)

• GET: /api/extract/cog/{cog}

  • Extract town data of COG to BAN Format
  • Ex. /api/extract/cog/27115

• POST /api/extract/cog/ with body cogList param

  • Extract towns data of all COG in cogList to BAN Format
  • Ex. /api/extract/cog/ with body: {"cogList": [27115, 64102]}