Convert config files to typescript. #31294
Description
Overview of the feature request
eslint configuration uses multi-step templates so this is a breaking change to blueprints.
- eslint https://eslint.org/docs/latest/use/configure/configuration-files#typescript-configuration-files
- jest https://jestjs.io/docs/configuration
Motivation for or Use Case
Related issues or PR
- Checking this box is mandatory (this is just to show you read everything)