wip[frontend]: add subscriptions for campaigns

- Added subscriptions to DeploymentCampaign page
- Added subscriptions to UpdateCampaign page

TODO:
- Add subscriptions to Channels and Channel page
- Add subscriptions to DeploymentCampaigns and UpdateCampaigns page
- figure out how to update Target Tabs component on DeploymentCampaign
and UpdateCampaign pages

Signed-off-by: ArnelaL <arnela.lisic@secomind.com>

Author: ArnelaL