Support auto-completion for TSDoc

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### 🔍 Search Terms

tsdoc complete

### ✅ Viability Checklist

- [x] This wouldn't be a breaking change in existing TypeScript/JavaScript code
- [x] This wouldn't change the runtime behavior of existing JavaScript code
- [x] This could be implemented without emitting different JS based on the types of the expressions
- [x] This isn't a runtime feature (e.g. library functionality, non-ECMAScript syntax with JavaScript output, new syntax sugar for JS, etc.)
- [x] This isn't a request to add a new utility type: https://github.com/microsoft/TypeScript/wiki/No-New-Utility-Types
- [x] This feature would agree with the rest of our Design Goals: https://github.com/Microsoft/TypeScript/wiki/TypeScript-Design-Goals

### ⭐ Suggestion

TypeScript currently only supports auto-completion for JSDoc, not TSDoc. For example, there is no intelligent suggestion for [@defaultValue](https://tsdoc.org/pages/tags/defaultvalue/).


### 📃 Motivating Example

If [TSDoc](https://tsdoc.org/) is the recommended commenting standard for TypeScript, then it should natively support intelligent suggestions and syntax highlighting for TSDoc.

### 💻 Use Cases

Writing comments using TSDoc syntax in VSCode.

Commencez par étudier comment TypeScript fournit actuellement la complétion automatique de JSDoc et comment VSCode consomme les résultats de ce service de langage. Comparez ce comportement avec les balises TSDoc telles que @defaultValue et déterminez le comportement attendu pour la coloration syntaxique et la complétion ; le travail est terminé lorsque les commentaires TSDoc reçoivent des suggestions intelligentes sans modifier le JavaScript généré.

Rédigé par le modèle d'indexation à partir du texte de l'issue.