Callsign-based PSK Reporter + ADIF tool

[KF6UFO]

GridTracker2 already does an excellent job of combining PSK Reporter data, mapping, and logbook information. What I wanted, however, was a simpler **callsign-based view** showing the exact QSO history beside every station currently appearing in PSK Reporter.

Someone may already have built this, but I could not find it, so I created a first version:

https://github.com/kf6ufo/pskreporter-local

For each active callsign, it shows QSOs on the current band and total QSOs across all bands:

* `0/0` — never worked
* `0/2` — worked before, but not on this band
* `1/3` — one QSO on this band, three total

It can query the last 15, 30, or 60 minutes using a local, read-only ADIF file.

I think it may be especially useful on unpredictable bands such as 6 and 10 meters. I can leave it running during the day and immediately notice when someone appears whom I have never worked, or have not worked on that band.

This is only the first table-based version, and feedback would be very welcome.