Object creation with defaults

Add to tips somewhere.

https://stackoverflow.com/a/44124349/390330

```ts
interface Model {
content: string;
count: number
}

function createModel({
// Add defaults
content = '',
count = 0
} = {}): Model {
return { content, count }
}

createModel(); // Okay
createModel({ count: 1 }); // Okay
createModel({ counted: 1 }); // Error: Typo
```
:rose:

Find the repository's tips section and review how similar TypeScript examples are organized. Use the linked Stack Overflow answer and the example in this issue as the content reference; done means the object-creation-with-defaults guidance is added in the appropriate tips location.

Written by the indexing model from the issue text.