splitting out some csv parsing functions

changing the landpoint files to use a new column "included", to filter for countries, rather than using the lat lon values to decide what to filter

adding a list of wildcards used when searching for nc file - useful if reporting that none are found

changing the optional SPATIAL_POINTS_FILE config parameter to SPATIAL_POINTS_FILE_TEMPLATE and allowing ${} value subsiitution in the paremeter value
removing some points from the ethiopia post processing landpoint file, to allow checking that the filtering for post-processing is working

It is possible to specify which spatial points file to use in the main config json. The default file will be used if not specified. This will allow us to perfrom historic runs with the old grid and specify manually.
The country-level points filtering used by the postprocessing steps (beofre plotting) now round down the acuracy when filtering points. This allows the country filtering to work with both the new and the old grid, as the differece is lost in the rounding

some additional comments and code-tidying

simplifying the import required to a single statement by putting generate_all_jobs within the job_runner file

reverting code to run in the standard way (running with overwrite as false, etc). Removing redundant code from EnvSuitPipeline.py

import and shell script changes to use new plotting and met_extractor (now met_processing) package structures

EnvSuit pipeline update, to handle cleaning, job generation, and multiprocessing in a more direct way.

- dedicated run functions,
- work folder for each run,
- hadling multiple post processes so not just NAME data can be use as an input,
- general tidy up the code.

Updating Env Suit v2.0 calculation. Copied from operational EnvProcessor.py in master branch. Not tested for this commit.