Completion-Snippet: add parameters to defaultSnippets to specify the type and simbolKind

[p-spacek]

When object is type anyOf (array: null | string[]) some code completion doesn't work properly.
For example snippets on array it's not working very well.

"anyOf_arrayObj": {
  "anyOf": [
    {
      "type": "array",
      "items": {
        "type": "object"
      }
    },
    {
      "type": "null"
    }
  ],
  "defaultSnippets": [
    {
      "label": "- (array item)",
      "type": "array",
      "suggestionKind": 9,
      "body": {
        "key": ""
      }
    }
  ]
},

Helps also in scenarios where yaml parser doesn't know that parent is array:

anyOf_arrayObj:
  # invoke array completion here

This new parameters can specify:

• type: type of snippet.
• symbolKind: id of symbol that is displayed on completion panel.

This feature probably doesn't solve the cause of the problem. But offers workaround.

Describe alternatives you have considered

it can be probable done by fix
Array code completion does't work in some scenarios

[p-spacek]

new parameters added:
type: type of snippet.
symbolKind: id of symbol that is displayed on completion panel.