editoast: add signal support in the search engine

[leovalais]

• adds option dry in endpoint payload to generate the SQL query without executing it
• adds support of arrays in the query evaluator
• adds support of array and union types in search.yml with a less hack-y deserializer
• adds the following functions:
  • list -- array constructor
  • contains -- checks for array inclusion
• migration for osrd_search_signal
• signal search object description in search.yml

Both the old and incoming signaling models are supported, as the search engine provides the following criteria:

• aspects -- present in both signal descriptions
• logical_types -- only for the new signal descriptions, it's an empty array for the old ones

closes #3546

[codecov]

Codecov Report

Merging #3527 (8e27f01) into dev (df55582) will increase coverage by 0.05%.
The diff coverage is 66.66%.

❗ Current head 8e27f01 differs from pull request most recent head b00aa59. Consider uploading reports for the commit b00aa59 to get more accurate results

@@             Coverage Diff              @@
##                dev    #3527      +/-   ##
============================================
+ Coverage     68.14%   68.20%   +0.05%     
  Complexity     1919     1919              
============================================
  Files           424      424              
  Lines         21336    21404      +68     
  Branches       1557     1557              
============================================
+ Hits          14540    14599      +59     
- Misses         6063     6072       +9     
  Partials        733      733              

Flag	Coverage Δ
editoast	74.31% <66.66%> (+0.24%)	⬆️

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

Impacted Files	Coverage Δ
editoast/src/views/search/config.rs	0.00% <0.00%> (ø)
editoast/src/views/search/mod.rs	2.17% <0.00%> (-0.21%)	⬇️
editoast/src/views/search/dsl.rs	54.62% <15.38%> (-4.82%)	⬇️
editoast/src/views/search/context.rs	82.45% <75.00%> (-1.19%)	⬇️
editoast/src/views/search/sqlquery.rs	89.65% <80.95%> (+21.96%)	⬆️
editoast/src/views/search/typing.rs	85.71% <90.90%> (+3.36%)	⬆️
editoast/src/error.rs	31.37% <100.00%> (+0.12%)	⬆️
editoast/src/views/search/process.rs	92.68% <100.00%> (+0.47%)	⬆️

... and 1 file with indirect coverage changes

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[flomonster]

Pretty good PR 👍