adding mapping python code examples

[anniegale9538]

I have found additional docs that do not have the Python code examples.

This round became quite large, I'm happy to break this up as needed!

Dynamic mapping
Dynamic field mapping
Dynamic templates

Explicit mapping

Map a runtime field
Define runtime fields in a search request
Override field values at query time
Retrieve a runtime field
Index a runtime field
Explore your data with runtime fields

Field data types
Aggregate metric field type
Alias field type
Arrays
Binary field type
Boolean field type
Completion field type
Date nanoseconds field type
Dense vector field type
Flattened field type
Geopoint field type
Geoshape field type
Histogram field type
IP field type
Join field type
Object field type
Percolator field type
Point field type
Range field types
Rank feature field type
Rank features field type
Search-as-you-type field type
Semantic text field type
Shape field type
Sparse vector field type
Text type family
Token count field type
Unsigned long field type
Version field type

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[pquentin]

Thanks! LGTM.