Call History

[py4xx]

Is your feature request related to a problem? Please describe.
Using call History helps a lot in the competition.

Describe the solution you'd like
A way to create or import a CALL HISTORY file.
When choosing the contest, not1mm automatically imports the contest's call history.
When filling in the CALLSIGN field, automatically, in the EXCH field, it is completed with the exchange of the station entered in the CALLSIGN field.

Describe alternatives you've considered

Additional context
RAEM.txt