modify electron forge installer / package configs

package.json

  "config": {
    "forge": {
      "electronInstallerDMG":{"format":"UDRO"},
      "make_targets": {
        "win32": [
          "squirrel"
        ],
        "darwin": [
          "dmg"
        ],
        "linux": [
          "deb",
          "rpm"
        ]
      },
      "electronPackagerConfig": {
        "icon": "assets/icon/EndUserIcon",
        "protocols": [
          {
            "protocol": "customprot",
            "name": "customprot",
            "schemes": "customprot"
          }
        ]
      },
      "electronWinstallerConfig": {
        "name": "yourappname"
      },
      "electronInstallerDebian": {},
      "electronInstallerRedhat": {},
      "github_repository": {
        "owner": ""
      },
      "windowsStoreConfig": {
        "packageName": "",
        "name": "yourappname"
      }
    }
  }