chore: Switch source calc from R version to python

This relates to developments to ease the maintenance
of the forecast system. With this development, there is no R code to
actively maintain. Moving from git project wheat-source-generation to
ews-source-generation. The python code has been validated for
identical performance to the R version. The only differences are
small changes from the underlying shapefile reading packages
(see notes-on-rewriting-in-python.txt in ews-source-generation).

Keeping the option to used the R code for some time in case any
follow-up investigation is required.

coordinator/ProcessorSurveys.py

@@ -946,7 +946,7 @@ def process_in_job_survey(jobPath,status,config,component):
     date = datetime.datetime.now()
 
     # prepare environment for clustering calc
-    call_R = True
+    call_R = False
 
     output_directory = f"{jobPath}/SURVEYDATA_{config['StartString']}_0000"
     Path(output_directory).mkdir(parents=True, exist_ok=True)