FEATURE: Add Cohere models to AI helper and automation (#576)

config/locales/client.en.yml

@@ -17,6 +17,8 @@ en:
         claude_3_haiku: Claude 3 Haiku
         mixtral_8x7b_instruct_v0_1: Mixtral 8x7B Instruct V0.1
         mistral_7b_instruct_v0_2: Mistral 7B Instruct V0.2
+        command_r: Cohere Command R
+        command_r_plus: Cohere Command R+
       scriptables:
         llm_report:
           fields:

lib/automation.rb

@@ -19,11 +19,14 @@ module DiscourseAi
         id: "mistralai/Mistral-7B-Instruct-v0.2",
         name: "discourse_automation.ai_models.mistral_7b_instruct_v0_2",
       },
+      { id: "command-r", name: "discourse_automation.ai_models.command_r" },
+      { id: "command-r-plus", name: "discourse_automation.ai_models.command_r_plus" },
     ]
 
     def self.translate_model(model)
       return "google:gemini-pro" if model == "gemini-pro"
       return "open_ai:#{model}" if model.start_with? "gpt"
+      return "cohere:#{model}" if model.start_with? "command"
 
       if model.start_with? "claude"
         if DiscourseAi::Completions::Endpoints::AwsBedrock.correctly_configured?(model)

lib/completions/llm.rb

@@ -41,6 +41,7 @@ module DiscourseAi
                 Llama2-*-chat-hf
                 Llama2-chat-hf
               ],
+              cohere: %w[command-light command command-r command-r-plus],
               open_ai: %w[
                 gpt-3.5-turbo
                 gpt-4