Removes operations, resources_created, user_output fields from the Global Context and Template class

[joshpalis]

Description

Based on offline discussion, the State Index (issue #74 ) will be responsible for storing the resources_created and user_outputs field instead of the Global Context Index, and will be returned by the Status API upon the completion of a provision workflow. This PR modifies the Template class and Global Context Index mapping to reflect this.

Additionally, the operations field has been removed from the template/Global Context, as it is currently not used. (May add it back in once the Orchestrate API is exposed)

The following use case template is an example following the new format :

{
  "name": "deploy-register-model",
  "description": "test case",
  "use_case": "TEST_USE_CASE",
  "version": {
    "template": "1.0.0",
    "compatibility": [
      "2.12.0",
      "3.0.0"
    ]
  },
  "workflows": {
    "provision": {
      "nodes": [
        {
          "id": "workflow_step_1",
          "type": "register_model",
          "inputs": {
            "name": "openAI-gpt-3.5-turbo",
            "function_name": "remote",
            "description": "test model",
            "connector_id": "8SQESosBvqMC0I7jNGsk"
          }
        },
        {
          "id": "workflow_step_2",
          "type": "deploy_model",
          "inputs": {
            "model_id": "${workflow_step_1.model_id}"
          }
        }
      ],
      "edges": [
        {
          "source": "workflow_step_1",
          "dest": "workflow_step_2"
        }
      ]
    }
  }
}

Issues Resolved

A continuation of issue #105
Part of #88

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[codecov]

Codecov Report

Merging #114 (5152ad3) into main (23b2f15) will decrease coverage by 0.32%.
The diff coverage is 100.00%.

@@             Coverage Diff              @@
##               main     #114      +/-   ##
============================================
- Coverage     80.55%   80.24%   -0.32%     
+ Complexity      262      250      -12     
============================================
  Files            30       30              
  Lines          1039      992      -47     
  Branches        103       95       -8     
============================================
- Hits            837      796      -41     
+ Misses          164      160       -4     
+ Partials         38       36       -2     

Files	Coverage Δ
...a/org/opensearch/flowframework/model/Template.java	89.65% <100.00%> (+0.84%)	⬆️

[owaiskazi19]

LGTM