refactor(StreamsList): addons install button [WIP]

[kKaskak]

• Refactored the install button placement to two different scenarios:

1. When core returns less than 2 Ready responses from the addons Object.keys(streamsByAddon).length < 2 && countLoadingAddons === 0 we show the big button (this is because we always get one response from WatchHub)

2. When core returns more than 1 response even if they are not ready we show a smaller button at the end of the streams list to have more space on smaller devices Object.keys(streamsByAddon).length > 1

TODO

• Implement core side confirmation that the user does not need the button at all (count account age, installed addons etc)