Types: use generated GraphQL types everywhere

[veksen]

We've implemented generated types from the GraphQL endpoint, but they are not used everywhere:

example of implementation:

website/src/pages/rules.tsx

Line 7 in adb2a92

function RulesPage({ data }: ComponentQuery<{ md: MarkdownRemark }>) {

example where it's missing:

website/src/components/ResourceHeader/index.tsx

Lines 8 to 16 in adb2a92

	interface IResourceHeaderProps {
	relativePath: any
	title: any
	authors: any
	createdAt: any
	timeToRead: any
	recommendedReading: any
	externalResources: any
	}