use different networks instead of different canister names

[ZenVoich]

fixes #116

Need to update canister_ids.json in forks.

For example Cherries:

{
  "production": {
    "ic": "y2ga5-lyaaa-aaaae-qae2q-cai"
  },
  "staging": {
    "ic": "ytflb-5qaaa-aaaae-qae3a-cai"
  }
}

⬇️

{
  "main": {
    "ic": "y2ga5-lyaaa-aaaae-qae2q-cai",
    "staging": "ytflb-5qaaa-aaaae-qae3a-cai"
  }
}