feat: add sample code for multiple inequalities indexing consideration query

[cindy-peng]

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Fixes #<issue_number_goes_here> ☕️

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[snippet-bot]

Here is the summary of changes.

You are about to add 2 region tags.

• samples/snippets/src/main/java/com/example/datastore/filters/IndexingConsiderationQuery.java:24, tag datastore_query_indexing_considerations
• samples/snippets/src/main/java/com/example/datastore/filters/OrderFieldsQuery.java:24, tag datastore_query_order_fields

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[daniel-sanche]

LGTM, but take a look at my comment on // Order results by experience