removing met-resample code as now in it's own repo https://gitlab.developers.cam.ac.uk/gilligan-epid/wheat-rusts/met-resampling

Supporting ongoing collaboration with Mauricio Fernandes and Felipe de Vargas, and Will Thurston, to develop wheat blast and fusarium head blight models driven by UK Met Office met data.

This processor is put it a subdirectory called 'extra' because it is not part of the core products being generated at Cambridge. As such, it will not have substantial documentation or testing, until a time when it is made a core product, or superceded by work elsewhere.

removing three scripts and putting them into the ews-utils package for storage

changing the pythonpath for environemtnal_suitabiulity in the run processor script. Makes the package imports comparable to other modules. Note that I will also be changing the classpath defined in met_extractor/configs/template_operational_config.json in the run config json files