Implement the proximity precision option so that you can set it throu…

…gh a model file

- good when you prefer shorter indexing time to higher search precision
- https://www.meilisearch.com/docs/reference/api/settings#proximity-precision

lib/meilisearch-rails.rb

@@ -67,6 +67,7 @@ class IndexSettings
         pagination
         faceting
         typo_tolerance
+        proximity_precision
       ].freeze
 
       CAMELIZE_OPTIONS = %i[pagination faceting typo_tolerance].freeze

spec/integration_spec.rb

@@ -1235,3 +1235,39 @@ def self.name
     end
   end
 end
+
+describe 'proximity_precision' do
+  before do
+    stub_const(
+      'OtherColor',
+      Class.new do
+        include ActiveModel::Model
+        include MeiliSearch::Rails
+      end
+    )
+  end
+
+  context 'when the value is byWord' do
+    before do
+      OtherColor.meilisearch synchronize: true, index_uid: safe_index_uid('OtherColors') do
+        proximity_precision 'byWord'
+      end
+    end
+
+    it 'sets the value byWord to proximity precision' do
+      expect(OtherColor.index.get_settings['proximityPrecision']).to eq('byWord')
+    end
+  end
+
+  context 'when the value is byAttribute' do
+    before do
+      OtherColor.meilisearch synchronize: true, index_uid: safe_index_uid('OtherColors') do
+        proximity_precision 'byAttribute'
+      end
+    end
+
+    it 'sets the value byAttribute to proximity precision' do
+      expect(OtherColor.index.get_settings['proximityPrecision']).to eq('byAttribute')
+    end
+  end
+end