This commit adds support to allow the LANCommander server to scale horizontally. Multiple instances of the application can be deployed for load-balancing purposes. This will require a load balancer in front of the instances, as well as either MySQL or PostgreSQL and a Redis cache.
Settings for the server are now combined with the settings from the SDK. This introduces a large breaking change and a migration should be created. This refactor utilizes .NET Configuration and the Options pattern. This will allow for the overriding of any setting using envionment variables. It also means that Settings.yml can be used to override any .NET configuration. A SettingsProvider implementation was created, and any updating of settings was changed from SettingsService.SaveSettings() to SettingsProvider.Update(s => { ... })
