Docker: recommend host networking, document device suggestions

[naltatis]

fixes #1202, refs evcc-io/evcc#34244

The Docker guide treated bridge networking as the standard and only showed host networking in a tab for SMA devices and EEBus. With device suggestions in the host field, host networking has a further benefit, since a container in bridge mode doesn't see the local network.

• New Network Mode section explains the benefits of host networking (device suggestions, mDNS for EEBus, SMA Sunny Home Manager and the app, UDP devices, no port list) and when bridge networking is fine
• Installation reordered to Docker Compose, Docker CLI, Docker UI, each with a Host network (recommended) and a Bridge network tab that stay in sync
• Volumes and ports are explained once, updates are combined into one section, the CLI update steps are added to the English page
• Examples fixed: comments inside the docker run commands broke them, and the host examples published ports that are ignored in host mode
• machine-id mount, command and version removed from the examples, port 28376/udp for EVSE Master added
• Beginners are pointed to a Raspberry Pi with the ready-made image instead of the Linux or macOS guide
• Advanced section at the end of the page for EVCC_DISCOVERY_HOSTS, a static device list for controlled bridge setups
• Configuration page describes the device suggestions in the IP address or hostname field
• Considerations page no longer asks to collect all IP addresses from the router beforehand