ml-commons Support OCI connector and GenAI

Is your feature request related to a problem? We need to support a connector to the Oracle Cloud Infrastructure (OCI) and OCI GenAI service as ML so that the conversation search can work for Oracle Cloud Infrastructure

What solution would you like? From the customer, we are going to add new connector protocols and ML Provider

Add a new connector protocol oc1_sigv1 to allow ML common to talk to OCI services.
Add new ModelProvider oci_genai

Implementation changes

Add OCI common SDK dependencies for oc1_sigv1 protocol implementation
Add new logic to generate prompt and OCI GenAi request and parse response from OCI GenAi response

What alternatives have you considered? A clear and concise description of any alternative solutions or features you've considered.

Do you have any additional context? Example of OCI remote connector

{
     "name": "OpenAI Chat Connector",
     "description": "The connector to public OpenAI model service for GPT 3.5",
     "version": 2,
     "protocol": "oci_sigv1",
     "parameters": {
         "endpoint": "inference.generativeai.us-chicago-1.oci.oraclecloud.com",
         "auth_type": "resource_principal"
     },
     "credential": {
     },
     "actions": [
         {
             "action_type": "predict",
             "method": "POST",
             "url": "https://${parameters.endpoint}/20231130/actions/generateText",
             "request_body": "{\"prompts\": [\"${parameters.prompt}\"], \"maxTokens\": 300, \"temperature\": 1, \"frequencyPenalty\": 0, \"presencePenalty\": 0, \"topP\": 0.75, \"topK\": 0, \"compartmentId\": \"ocid1.compartment.oc1..aaaaaaaadhycphouqp6xuxrvjoq7czfv44o2r5aoz53g3bw6temcu432t76a\", \"returnLikelihoods\": \"NONE\", \"isStream\": false, \"stopSequences\": [], \"servingMode\": { \"modelId\": \"cohere.command\", \"servingType\": \"ON_DEMAND\" } }"
         }
     ]
 }

Search request

{
  "query": {
    "match": {
      "text": {
        "query": "Which team Phuong worked in Oracle"
      }
    }
  },
  "ext": {
    "generative_qa_parameters": {
      "llm_model": "oci_genai/cohere.command",
       "llm_question": "Which team Phuong worked in Oracle",
       "conversation_id": "T8DMa40BQ5L2Y1cB6PVX",
       "context_size": 5,
       "interaction_size": 1,
       "timeout": 15
      }
   }
}