Add star-tree and json index to the output of /segments/{tableName}/metadata API

[npawar]

This PR #5718 introduced the API. We are missing json index and star tree index from it.

"indexes": {
      "homeRuns": {
        "bloom-filter": "NO",
        "dictionary": "YES",
        "forward-index": "YES",
        "inverted-index": "NO",
        "null-value-vector-reader": "NO",
        "range-index": "NO"
      },

[npawar]

fyi @kriti-sc

[kriti-sc]

Sample response for exposing both json-index and star-tree-index

"columns": [],
"indexes": {
    "studentID": {
        "bloom-filter": "NO",
        "dictionary": "YES",
        "forward-index": "YES",
        "inverted-index": "YES",
        "null-value-vector-reader": "NO",
        "range-index": "NO",
        "json-index": "NO"
    },
    "firstName": {
        "bloom-filter": "NO",
        "dictionary": "YES",
        "forward-index": "YES",
        "inverted-index": "NO",
        "null-value-vector-reader": "NO",
        "range-index": "NO",
        "json-index": "NO"
    }
},
"startree-index": [
    {
        "dimension-columns": [
            "studentID",
            "firstName"
        ],
        "metric-aggregations": [
            {
                "column": "col1",
                "aggregation": "SUM"
            },
            {
                "column": "col2",
                "aggregation": "DISTINCT"
            },
            {
                "column": "*",
                "aggregation": "COUNT"
            }
        ],
        "max-leaf-records": 1,
        "dimension-columns-skipped": [
            "col3"
        ]
    }
]

[kriti-sc]

PR: #6873