How to set the language for diagnostic messages

I want to dynamically set the language of diagnostic information based on the user's region.

But I didn't find the corresponding API.

I know using `ts.validateLocaleAndSetLanguage`.
it doesn't work in ts-morph.
But it is indeed valid in typescript.

Is there any other method provided in ts-morph that I don't know about?

```ts
import { Project, ts } from 'ts-morph';

ts.validateLocaleAndSetLanguage('zh-cn', ts.sys);

export const project = new Project({
compilerOptions: {
target: ScriptTarget.ES2015,
},
});
const sourceFile = project.createSourceFile('test.ts', 'const a;', { overwrite: true });
const diagonstics = sourceFile.getPreEmitDiagnostics();
diagonstics[0].getMessageText();
```

The issue provides a TypeScript reproduction using ts.validateLocaleAndSetLanguage, Project, createSourceFile, and getPreEmitDiagnostics; start by running it and tracing how ts-morph obtains diagnostic messages. No repository file or test is named, so identify the diagnostic-language entry point and define done as a supported way to select the locale with the resulting message reflecting it.

Written by the indexing model from the issue text.