98: Remove tor module r=da-kami a=da-kami
This removes the currently unused `tor module`.
Different `tokio` versions have been causing issues with the `tor` module in the past (i.e. `Cargo.lock` broken problem...). It started causing issues again when adding a dependency to `jsonrpc_client` working on https://github.com/comit-network/xmr-btc-swap/pull/97
We don't support `tor` at the moment and are no planning to add this feature initially as it is not super important to users.
The functionality can easily added again at a later point.
Co-authored-by: Daniel Karzel <daniel@comit.network>
This module was intended to contain helper functions for each step.
However, those are not needed except for the negotiate step.
A dedicated module is not needed for one function.
The usage of the peer id is incorrect as we do not even check it when
dialing. For now, we can ignore it.
We can then re-introduce it and use it properly at a later stage.
Reworked Alice XmrLocked state transition handler to handle the
scenario when Alice received the encsig but Bob refunds.
Previously Alice was trying to redeem after receiving the encsig
without checking if t1 had elapsed.
Previously state0 had to be set after creating Alice's behaviour.
With the event loop we no longer has access to the swarm so
set_state0() has to be called indirectly through a channel. This
means it is difficult to guarantee state0 is being set due to the
asynchronous nature of channels. This was solved by initialising
Alice with state0.
Previously the libp2p swarm had to be manually polled within the
protocol execution code to execute actions such as sending a
message. The swarm is now wrapped in SwarmDriver which polls the
swarm in a seperate task
