feat: for partner/count add network delete unit

[DarkGhost7]

localhost:5000/partners/count
outputs the following

{
  "partners_count": 22,
  "ts": 1665017986,
  "unit": ""
}

delete the unit section and output how many networks partners are on, if only eth and fantom list those networks. This will let us know if there are new b2b partners on other networks.

  "partners_count": 22,
  "ts": 1665017986,
  "networks": "ETH", "FTM"