[DOC-META] Create new Query DSL topic pages

[alicejw1]

Write new Query DSL topic pages that were identified as missing from the current documentation set:

New pages needed

Each of the following topics require a new page with sub-sections:

• [x] #3068 relevance score, query context (how well doc matches a query clause), filter context (does doc match clause or not),
• [x] Compound queries boost, constant score, disjunction max, function score, (add existing Boolean queries to this topic)
• [ ] Span queries containing, field masking, first, multi-term, near, not, or, term, within
• [ ] Geographic queries bounding box, distance, grid, polygon, geoshape
• [ ] Regular expression queries all regex expressions available
• [ ] Joining queries nested, has child, has parent, parent ID
• [ ] Specialized queries Distance feature, more like this, percolate, rank feature, script, script score, wrapper
• [ ] Parameter queries minimum should match, rewrite
• [ ] Shape queries geo-shape query, pre-indexed shape, ignore unmapped, spacial relations (intersect, disjoin, within, contains)

New subsections needed (existing topic pages)

The following existing topic pages require new content for the following subsections:

• [x] Term-level queries Fuzzy queries, terms set
• [x] Full-text queries intervals, combined fields

[alicejw1]

Hi @macrakis, could you please take a look at the list of main topics (pages) and subsections and let us know if we missed any? Thanks

[alicejw1]

Update - SMEs identified the top four topics:

1. Query Context and filter context
2. Compound queries
3. Specialized queries: rank feature
4. Span queries

[hdhalter]

Reassigning to @kolchfa-aws to take over. Thanks, Fanit!

[hdhalter]

Customer feedback suggests that we need to address the query DSL pages. Some are liked higher than others, so this shows the breakdown to date, in order to see where we can prioritize.

• query-dsl/index - 25% likes
• query-dls/full-text - 60% likes
• query-dsl/term - 63% likes
• query-dsl/test-analyizers - 50% likes

Query DSL pages are consistently ranked the highest pages visited week over week.