v1.3: Sort facet values

[maryamsulemani97]

By default, facet values are sorted in ascending alphanumeric order. With v1.3, users will be able to configure the sort order to sort by value count as well. This will be through the new sortFacetValuesBy property in the facet settings object.

To do

• Update faceting settings
• Update faceted search guide
• Add new errors
• Update Meilisearch 101

Reference

• Issue on engine: Sort facets value by alphanumerical or count order meilisearch#3612
• Spec: Faceting Setting API - sortFacetValuesBy  specifications#247
• Notion: https://www.notion.so/meilisearch/Sort-facets-value-by-alphanumerical-or-value-count-order-8789013ea57b40b685ba5e7906c4583a?pvs=4
• SME: @Kerollmops