TS refactoring

[sebastien-comeau]

Description

• Set eslint rule import/consistent-type-specifier-style to error with prefer-top-level option
• Remove unused @gregory-j-baker types from type.d.ts file
• Move RouteHandleData interface out of type.d.ts file since it is not recommended. type.d.ts file should only be used for type augmentation when really needed.
• Apply prettier format fix

Related Azure Boards Work Items

Screenshots (if applicable)

Checklist

• I have tested the changes locally
• I have updated the documentation if necessary
• I have added/updated tests that prove my fix is effective or that my feature works
• I have checked that my code follows the project's coding style by running npm run format:check
• I have checked that my code contains no linting errors by running npm run lint
• I have checked that my code contains no type errors by running npm run typecheck
• I have checked that all unit tests pass by running npm run test:unit -- run
• I have checked that all e2e tests pass by running npm run test:e2e

Test Instructions

Additional Notes

• Don't put your types in .d.ts files
• TypeScript doesn't support this pattern