update gnss-r osw converter

[BenjaminRuston]

Description

Fix a few small issue with the osw converter and update with new metaData allowing more strict quality control

this uses wind standard deviation, presence of sea-ice and a wind confidence from vendor

Issue(s) addressed

Resolves #1495

Checklist

• [x] I have performed a self-review of my own code
• [x] I have run the unit tests before creating the PR

[BenjaminRuston]

just getting started more to do here but thought best to get the ball rolling

[BenjaminRuston]

@smaticka think this is ready, worked through the other two osw datasets and now all should pass something for preQC and error estimate

[BenjaminRuston]

@smaticka could you have a look at this, let me know if you see anything