fix(typescript-estree): fix filename handling for vue JSX + markdown

[bradzacher]

Integrations I never knew existed:

• JSX in vue files
• Parsing of markdown snippets via eslint-plugin-markdown

Fixes #1123
Fixes #1124

[typescript-eslint]

Thanks for the PR, @bradzacher!

typescript-eslint is a 100% community driven project, and we are incredibly grateful that you are contributing to that community.

The core maintainers work on this in their personal time, so please understand that it may not be possible for them to review your work immediately.

Thanks again!

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[JounQin]

Can we add a test case for .mdx with eslint-plugin-mdx which is definitely different from eslint-plugin-markdown?

More detail: https://github.com/rx-ts/eslint-mdx

[bradzacher]

feel free to raise a PR with an integration test case for your tool if you want.
I don't know what MDX is, or how it works, so it would be better if you, as a maintainer of that project, adds an integration test.

The Vue stuff that we've added has been cobbled together by copy+pasting from issues that have been raised, and then those who know vue have PR'd modifications to the config appropriately.

[JounQin]

Thx for your explanation, I will raise another PR after your PR merged ASAP.