Editoast: add search endpoint

[leovalais]

Adds the /search?<page>&<page_size> endpoint.

Example payload:

{
    "object": "operationalpoint",
    "query": ["or", 
                ["search", ["name"], "marse"], 
                ["=", ["trigram"], "pno"]],
}

The endpoint is generic enough so that new types of objects can be searched without modifying the route. For example, when we'll add signals into the search engine, we will
create a table named osrd_search_signal with some columns (e.g.: "label", "aspect", etc.). Then we'll update search.yml like so:

operationalpoint: ...
...
signal:
  table: osrd_search_signal
  columns:
    label: string
    aspect: string
    ...
  result:
    joins: ...
    columns:
      obj_id: obj_id
      infra_id: infra_id
      label: data#>>'{extensions,identifier,label}'
      aspect: data#>>'{extensions,identifier,aspect}'
      ...

We will then be able to query the route like this without changing the route's logic:

{
    "object": "signal",
    "query": ["and", 
                ["search", ["label"], "C14"], 
                ["=", ["aspect"], "carre"]
                ["=", ["infra_id"], 2]],
}

Only implemented for operational points for now.

See also #3002
Fixes #1625, fixes #1635

[codecov]

Codecov Report

Merging #2901 (7e13263) into dev (1912f36) will increase coverage by 0.73%.
The diff coverage is 68.88%.

@@             Coverage Diff              @@
##                dev    #2901      +/-   ##
============================================
+ Coverage     38.67%   39.41%   +0.73%     
  Complexity     1709     1709              
============================================
  Files           603      611       +8     
  Lines         18749    19199     +450     
  Branches       2511     2511              
============================================
+ Hits           7252     7567     +315     
- Misses        11091    11226     +135     
  Partials        406      406              

Flag	Coverage Δ
editoast	70.46% <68.88%> (-0.09%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
editoast/src/main.rs	9.27% <0.00%> (-0.10%)	⬇️
editoast/src/views/mod.rs	94.11% <ø> (ø)
editoast/src/views/search/config.rs	0.00% <0.00%> (ø)
editoast/src/views/search/mod.rs	2.12% <2.12%> (ø)
editoast/src/views/search/dsl.rs	59.43% <59.43%> (ø)
editoast/src/views/search/sqlquery.rs	67.69% <67.69%> (ø)
editoast/src/views/search/typing.rs	82.85% <82.85%> (ø)
editoast/src/views/search/context.rs	83.92% <83.92%> (ø)
editoast/src/views/search/process.rs	92.20% <92.20%> (ø)
editoast/src/views/search/searchast.rs	100.00% <100.00%> (ø)
... and 3 more

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[bloussou]

Looks great ! few things on doc :)

[bloussou]

It has improved a lot ! 🚀

[flomonster]

GG 🎉