feature request: passing app name in connector details

### Use Case

Passing the AppName in connector details will help ADX to differentiate between the output plugins ingesting data to ADX

### Expected behavior

pass the app name in

conn.SetConnectorDetails()

### Actual behavior

NA

### Additional info

_No response_

Start by locating conn.SetConnectorDetails() and the connector-details handling used by output plugins. Trace how connector details reach ADX, then add the app name so ADX can distinguish output plugins and verify the behavior with the relevant tests; the payload does not name a specific file or test.

Written by the indexing model from the issue text.