Refactor `lib/meilisearch.rb` #953

Job	Run time
smoke-test	35s
linter-check	23s
Yaml linting check	4s
integration-tests (Rails 6.1 with Ruby 3.2)	42s
integration-tests (Rails 7 with Ruby 3.2)	42s
integration-tests (Rails 6.1 with Ruby 3.3)	42s
integration-tests (Rails 7 with Ruby 3.3)	41s
integration-tests (Rails 6.1 with Ruby 3.4)	42s
integration-tests (Rails 7 with Ruby 3.4)	43s
	5m 14s

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