Enable Configuration of Ballard 1553 to use IRIG timing sources

[papowerNI]

Is your feature request related to a problem? Please describe.

IRIG timestamps are a common request in Avionics benches e.g. LRUs, and in Design Integration Level Test Systems. This custom device currently doesn't support logging IRIG timestamps with the data, but it is a desirable feature.

Describe the solution you'd like

IRIG timestamps from external sources can be read and logged as part of the Logging (displaying on screen as part of Rx is also desireable, but depends on the performance impact).

Describe alternatives you've considered

If IRIG timestamps slow down the inline Rx, doing IRIG timestamps in Logging only would be a viable alternative.