* Improved Windows Eventlog support.
Added support for logging to a different log with a Log:Source format.
Backwards compatible by treating "Source" as "Application:Source", where "Source" is default "Duplicati".
* Changed default log-level for eventlog to `Warning`.
This fixes#5770
* Fixed issue where checking for event log would crash the process.
Changed default log to `Duplicati` (was `Application`).
New default source names for service, agent and server.
* Reverted windows log-level back to information, now that there is a separate log for it
* Using "Duplicati 2" as the log name because "Duplicati" may be registered as a source name.
* Attempt to stop service before uninstalling
* Added additional diagnostics messages
* Fixed bug with starting the agent as a service
* Default to not use WindowsService for Agent as it requires permissions to create the event log
* Reduced log message levels for ongoing communication in agent
* Prevent double-logging from agent into Windows EventLog
* Made the agent log under a separate log source name
* Simplified task control by having all logic in a single class and using async control mechanism
* Fixed the tests
* Made the marking of a backup partial explicitly communicated if the enumeration process is stopped.
* Added support for pausing active transfers
* Introduced transfer token to abort operations.
* Updated the way LiveControl is emitting events.
* Retains the paused state of the server across reboots, this fixes#5760.
* Reworked the way throttle speeds are propagated through LiveControls.
* Added option to pause transfers in the UI.
* Removed throttle settings from the LiveControls class so it is exclusively handled by the ApplicationSettings.
* Removed `thread-priority` as it does not work at all when tasks are used.
* Fixed the stop dialog and API to only support stop and abort.
* Removed unused variables
Kept the infrastructure to allow re-introducing it later if a better source for a device key is found.
Added support for not having any valid settings encryption key.
Added warnings if the user is running without a settings encryption key.
Added additional checks during startup to help with troubleshooting and configuring a setup with a settings encryption key.
Docker builds will now warn if no encryption key is set.
This fixes#5518
Kenneth Skovhede