Add code samples and remove useless ones

[curquiza]

I created scripts to manage code samples (internal only)

1. I found out the following code samples are still in this repo but not used by the documentation anymore, so I removed them:

meilisearch-ruby
- 'documents_guide_add_movie_1' not found in documentation
- 'faceted_search_2' not found in documentation
- 'faceted_search_facets_1' not found in documentation
- 'getting_started_communicating_with_a_protected_instance' not found in documentation

2. I found the following code samples were missing:

meilisearch-rust
- 'search_parameter_guide_facet_stats_1' not found
- 'facet_search_1' not found
- 'facet_search_2' not found
- 'facet_search_3' not found

However, only search_parameter_guide_crop_marker_1, facet_search_2 were added/fixed, because of missing feature implementation for the others

[curquiza]

There is an issue open of this, can you confirm this code sample is still valid @brunoocasali?

[codecov]

Codecov Report

All modified lines are covered by tests ✅

Comparison is base (187b143) 99.60% compared to head (a1a955b) 99.60%.
Report is 6 commits behind head on main.

❗ Current head a1a955b differs from pull request most recent head be2805e. Consider uploading reports for the commit be2805e to get more accurate results

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #486   +/-   ##
=======================================
  Coverage   99.60%   99.60%           
=======================================
  Files           9        9           
  Lines         508      508           
=======================================
  Hits          506      506           
  Misses          2        2           

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[brunoocasali]

bors merge

[meili-bors]

Build succeeded:

• integration-tests (ruby 2.6)
• integration-tests (ruby 2.7)
• integration-tests (ruby 3.0)
• linter-check