Add new job parameters to Using HyP3: API examples

[asjohnston-asf]

The example job payloads in https://github.com/ASFHyP3/hyp3-docs/blob/develop/docs/using/api.md call out the optional job parameters for each job type, but these have not been kept up to date as new parameters have been added.

As of this writing, options not included in the examples are:

RTC_GAMMA

• dem_name
• include_rgb
• resolution

INSAR_GAMMA

• include_inc_map