feat(remote access): Auto detect URL scheme when opening url based on name

[reubenmiller]

Align with the convention used by the https://github.com/Cumulocity-IoT/cumulocity-remote-access-cloud-http-proxy project when opening the local proxy's endpoint in the browser. If the remote access's configuration starts with https:, then the browser will be opened to the https address (instead of http). Otherwise the http address will be used.

Examples

# Open browser and auto detect either http or https
c8y remoteaccess server --device 12345 --configuration "*rugpi*" --browser

# Open browser using http URL (auto detection will be disabled)
c8y remoteaccess server --device 12345 --configuration "*rugpi*" --browser --scheme http

# Open browser using https URL (auto detection will be disabled)
c8y remoteaccess server --device 12345 --configuration "*rugpi*" --browser --scheme https

Resolves #420