Upgraded parser to align with CPS standards

Normalized email fields to ECS format

Added MITRE ATT&CK technique mappings

Enhanced threat detection capabilities

Improved dashboard visualizations with better field mappings

Updated all dashboards to use normalized fields

Renamed parser from mimecast-json to mimecast-emailsecurity. ***This is a breaking change***. Use the #type field with the new parser name in queries as #type="mimecast-emailsecurity". All fields in events will now be available with the Vendor prefix. Fields should be referenced as Vendor.<fieldname> in queries.

Added new *Awareness Training* dashboard to support following log types: awareness-training-performance-details, awareness-training-watchlist-details and awareness-training-user-data