Rewrite it in TypeScript

[ota-meshi]

Tell us about your environment

• ESLint version: v9.30.0
• eslint-plugin-vue version: v10.3.0
• Vue version: v3.5.17
• Node version: v22.17.0

The problem you want to solve.

I would like this project to be rewritten in TypeScript.

Your take on the correct solution to problem.

Rewrite it in TypeScript.

Additional context

I think it would be difficult to rewrite all the code at once. It might be better to consider an infrastructure that allows we to rewrite it bit by bit.

Related to:

#2528 (comment)
#2523