Feature/audit

[einari]

Added

• Adding capturing of what causes an event. (Causation API #277)
• Adding cause type for ASP.NET requests and automatically capturing information around this.
• Adding cause type for observers.
• Adding cause type for integration adapters (Import Operation).
• Adding a specific root cause type that captures software version, process, commit and details. (Add software version as metadata on the event context #858)
• Introducing a client API for configuring software version with commit details. (Add software version as metadata on the event context #858)
• Adding capturing of caused by with the introduction of an identity store (CausedBy API #278).
• Adding ASP.NET identity provider for capturing caused by, leveraging the HttpContext and the current user.