"indent" rule

ESLint's [indent](https://eslint.org/docs/rules/indent) rule doesn't seem to apply to Flow types. Example:

```
type Foo = {
a: string,
b: number,
}
```

No repository files, tests, or entry points are named. Start by locating the implementation and tests for the "indent" rule, then reproduce the Flow type example from the issue. Done means indentation in Flow type declarations is checked consistently with the rule's expected behavior.

Written by the indexing model from the issue text.