fix: enum member cannot have numeric value

[ghost]

Motivation

When we got an enum like this in definitions :

 "ResponseEntity": {
      "type": "object",
      "properties": {
        "body": { "type": "object" },
        "statusCode": {
          "type": "string",
          "enum": [
            "100",
            "101",
          ]
        },
        "statusCodeValue": { "type": "integer", "format": "int32" }
      },
      "title": "ResponseEntity"
    },

code generation will generate an enum like this

export enum EnumResponseEntityStatusCode {
  '100' = '100',
  '101' = '101'
}

Triggering a .ts error An enum member cannot have a numeric name.

Test Plan

The project builds and it worked for me in local. I don't have a test plan as there is no unitary tests in this package

Related issue

#64