QD: Fix translation of MML angles into our coord system

[#56363226]
QD: Use properties for angle, frequency, beams and period

[#56363226] [#56363724] [#56363770] [#56363848]
QD: Reduce default lifetime: Should be fixed better

This should use a simple cut-off lifetime, as in the original
Class MW implementation:

https://github.com/concord-consortium/mw/blob/6e2f2d4630323b8e993fcfb531a3e7cb06644fef/src/org/concord/mw2d/models/Electron.java#L88

[#56311158]