Adapt to Ethersync 0.7.0

[blinry]

Hey @schrieveslaach :) We released Ethersync 0.7.0 yesterday! Among other things, it includes a big simplification in making connections, which now work across local networks easily!

The Jetbrains plugin will need some adaptions to work with it. Would you be interested to update it?

• See the release notes for a note about the --directory option.
• Also see the release notes for the changed subcommands: We introduced share and join instead of daemon. (As we discussed, this is not something we expected to be part of the "editor plugin interface", but if I remember correctly, you could probably adapt to this change!)

[schrieveslaach]

@blinry, thanks for notifying me. I started to work on it (see #6) but not yet done.

FYI: I hope to manage to join the community call today.