Add Database Status Entity

[ThomasReinhardt-Sage]

Relevant information

Database status entity to collect the status of multiple databases from different sources

Checklist

• I've read the guidelines and understand the acceptance criteria.
• The value of the attribute marked as identifier will be unique and valid.
• I've confirmed that my entity type wasn't already defined. If it is I'm providing an explanation above.

[entityBot]

beep boop bop.

I have found some errors processing these changes:

* Error PARSING domainType: 'ext-database' on List<? extends Map<String, ?>> - jackson.databind.exc.MismatchedInputException: Cannot deserialize value of type `ArrayList<Map<String,Object>>` from Object value (token `JsonToken.START_OBJECT`)
at [Source: (String)"{
   "state":  0,
   "stateDesc":  "ONLINE",
   "totalConnections":  "137",
   "size":  "2048",
   "name":  "OpsDb",
   "unallocatedSpace":  "512",
   "eventType":  "DatabaseStatusSample",
   "instanceDB":  "OpsSrv_OpsDb",
   "dbId":  "5"
}"; line: 1, column: 1]

[entityBot]

beep boop bop.

I have found some errors processing these changes:

* Error PARSING domainType: 'ext-database' on List<? extends Map<String, ?>> - jackson.databind.exc.MismatchedInputException: Cannot deserialize value of type `ArrayList<Map<String,Object>>` from Object value (token `JsonToken.START_OBJECT`)
at [Source: (String)"{
   "state":  0,
   "stateDesc":  "ONLINE",
   "totalConnections":  "137",
   "size":  "2048",
   "name":  "OpsDb",
   "unallocatedSpace":  "512",
   "eventType":  "DatabaseStatusSample",
   "instanceDB":  "OpsSrv_OpsDb",
   "dbId":  "5"
}"; line: 1, column: 1]