Add a protocol-independent recovery channel outside LGMP so clients can
request a usable guest display even when transport versions differ.
Synchronize recovery state with the helper across driver restarts and
restore the configured topology without persisting temporary changes.
Make CSRWLock own the native lock and provide scoped guards for shared,
exclusive, early-unlock, and non-blocking use.
Replace direct SRW lock management throughout the IDD, input driver,
and helper while preserving the existing lock scopes.
Move the reusable named-pipe endpoint and shared support code into
the LGCommon static library.
Run a dedicated server in LGIdd and a reconnecting client in
LGInput, with device-lifecycle handling and report framing.
Refactor the helper pipe to use the same endpoint implementation.
An event, `m_signal`, is created and signalled when either `m_running` or
`m_connected` is changed by another thread, so that the pipe thread knows
to interrupt the read.
The pipe is now opened as async to allow interruption, and the I/O
operations now use overlapped I/O.
Other changes include:
* Changing `m_pipe` to `HandleT<HANDLETraits>` since `CreateFile` returns
`INVALID_HANDLE_VALUE` instead of `NULL` on error.
* Remove the call to `WaitNamedPipeA` because it's useless and returns
immediately without waiting if the pipe doesn't exist.
As the IDD itself runs in a WUMDF sandbox, it doesn't have enough
access to perform interactive operations such as moving the cursor.
This helper service communicates with the IDD over a named pipe,
so that we can perform these things, as well as in the future provide
a configuration GUI.
