Add multiprocessing to improve the response time

[David-Henandez-nrcan]

• Add the module lambda_multiprocessing.py
• Replace several functions inside module module model_manager.py to process in parallel each field from the items obtained from the REST request in order to speed up the processing time.
• Modify the geolocator-lambda.py main module to use those new methods.
• Redact in readme.md the documentation related to the processing time.

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This change is 

[David-Henandez-nrcan]

A comparative table for some query results.

• Going from very specific to
• Very generic with 100+ results.