Add Script to fetch COAWST model run

[ted80810]

This pull request is for the script to fetch individual COAWST model runs. The script pulls the netcdf corresponding to a particular model run provided by Salme. CSVs with the river mile coordinates and station list were added to the '01_fetch/out' folder. These csvs were used to subset the data in the river_mile_timeseries function. This function also saves a new netcdf to S3 or locally. Creating a new netcdf decreases the load time. Even though, the data is subsetted by xarray the entire dataset is read which increases the computation time pretty significantly.

• Lines 45 - 62 was written to write a new netcdf file with the subsetted data to S3. However, @amsnyder I could use your expertise on this.
• Should the netcdf be stored on S3? The current size of the netcdf is 59 KB.
• take hourly mean.
• process script to create arrays for ML model.

[amsnyder]

@ted80810 - are you finished uploading your files? or do you still have some more to upload before i incorporate it into the pipeline?

[ted80810]

@amsnyder now its good to go. I finished updating the script with the changes. I also moved the notebook to the methods_exploration folder.

[amsnyder]

Perfect! thanks @ted80810!