Upgrade Metadata Extraction

[SeanDuHare]

Antoine has a list of metadata (see below) of CZI data we should try to extract - alongside this we want to make sure we are capturing the rest of the metadata that doesn't get parsed into simple key/value

Incomplete metadata in FMS (1).pdf

[kmitcham]

The fields mentioned by name in the PDF:
Channel Name (per track)
Light Source Intensity (per channel)
Exposure Time (per channel)
Imaging Device (per channel)
Number of Scenes
Aquisition Start (apparently some current values are spurious?) (for the example provided, it seems to be combo of date truncation followed by timezone conversion; Zen displayed time is UTC; FMS time is that truncated, and treated as midnight for timezone conversion)