feat: added constructor for PortalView that takes a Portal directly

[carlpoole]

…instead of relying on the PortalManager to retrieve the Portal

[Steven0351]

if (PortalManager.size() == 0) {
    throw Exception("Ionic Portals has not been setup with any Portals!")
}

Probably want to remove this check. Or at least only check when portal is null:

if (portal == null && PortalManager.size() == 0) {
    throw Exception("Ionic Portals has not been setup with any Portals!")
}