Feature: Service overview page

Shows the status and utilisation of the container, and also the links.

The links are found by parsing the containers labels and extracting the traefik rules.

Fixed a few issues with the docker manager:

1. Only one manager was started but the channel width was 5, meaning only one service was handled at a time. Now I start 5 managers, so 5 containers are handled at once.
2. Made it so loading services at start runs in the background as well, so the API is available a lot quicker
3. Each port uses a different service name in traefik, not sure if this was an issue but could of potentially caused problems when a service has multiple ports

Also added loading indicator and status dot components.

Next I’ll implement manual start/stop of containers (general action buttons), then service deletion and then volumes

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1. Service overview page
2. Loading indicator/status dot