[v1.6] Support `proximityPrecision` setting

[curquiza]

Following this central issue

This is related to a newly introduced feature in Meilisearch v1.6.0: the proximity-precision setting.

Refer to docs for more information.

• Add the new settings: proximityPrecision with get, update, and reset methods associated.
  Here are the JS equivalents in meilisearch-js you should create for this repository:

client.index('indexName').getProximityPrecision(); // calls GET /indexes/:uid/settings/proximity-precision
client.index('indexName').updateProximityPrecision('byAttribute');  // calls PUT /indexes/:uid/settings/proximity-precision
client.index('indexName').resetProximityPrecision(); // calls DELETE /indexes/:uid/settings/proximity-precision

• The methods associated with the /settings API route (to get, reset and update the settings globally) must be able to receive in the payload the new proximityPrecision field
• ⚠️ Add integration tests ⚠️
• Update the .code-samples.meilisearch.yaml
  • Add get_proximity_precision_settings_1 key and “translate” the following curl example by using the newly added methods: https://github.com/meilisearch/documentation/blob/cd9598324329d20d23f1d9200c6c537acaf01f3e/.code-samples.meilisearch.yaml#L1150-L1152
  • Add update_proximity_precision_settings_1 key and “translate” the following curl example by using the newly added methods: https://github.com/meilisearch/documentation/blob/cd9598324329d20d23f1d9200c6c537acaf01f3e/.code-samples.meilisearch.yaml#L1153-L1157
  • Add reset_proximity_precision_settings_1 key and “translate” the following curl example by using the newly added methods: https://github.com/meilisearch/documentation/blob/cd9598324329d20d23f1d9200c6c537acaf01f3e/.code-samples.meilisearch.yaml#L1158C1-L1160