Need to make transposed dataarrays for Eureka

[taylorbell57]

As mentioned in kevin218/Eureka#603 (comment), there is currently an issue with the connection between Eureka! and Astraeus. The required code to permit custom S3 inputs into Eureka's Stage 4 includes this snippet:

    "custom_dataset['time'] = time\n",
    "custom_dataset['time'].attrs['time_units'] = time_units\n",
    "custom_dataset['x'] = x\n",
    "custom_dataset['optspec'] = (['time', 'x'], optspec)\n",
    "custom_dataset['optspec'].attrs['flux_units'] = flux_units\n",
    "custom_dataset['optspec'].attrs['time_units'] = time_units\n",
    "custom_dataset['optspec'].attrs['wave_units'] = wave_units\n",
    "custom_dataset['opterr'] = (['time', 'x'], opterr)\n",
    "custom_dataset['opterr'].attrs['flux_units'] = flux_units\n",
    "custom_dataset['opterr'].attrs['time_units'] = time_units\n",
    "custom_dataset['opterr'].attrs['wave_units'] = wave_units\n",
    "custom_dataset['wave_1d'] = (['x'], wave_1d)\n",
    "custom_dataset['wave_1d'].attrs['wave_units'] = wave_units"

I tried using Astraeus' built-in functions to avoid having to explicitly do all that, but there is an issue with doing so. The SpecData files should have the format optspec = (time, x), but using Astraeus' makeLCDA function on the optspec array I get the transpose: (wavelength, time). In addition to the transpose issue, I'm also not totally sure whether having wavelength instead of x would break things within Eureka!'s Stage 4. Using the makeFluxLikeDA function also doesn't work since it requires that the input array be three dimensional (time, x, y) while we only have/want (time, x).

One possibility is that we may not be using Astraeus functions when making our Stage 3 outputs, but I believe we are, and the fact that the makeFluxLikeDA function puts time as the first index while makeLCDA puts time as the last index suggests to me that the issue is the result of inconsistencies in the formatting/organization of Astraeus' arrays.