Address eslint issues that currently ignored

[e-fisher]

Step 1 - Done ✅

Currently, we are not using the correct config for type checked project, which allows implicit any and other type-unsafe operations. To fix this:

1. Use plugin:@typescript-eslint/recommended-type-checked eslint config instead of plugin:@typescript-eslint/recommended https://typescript-eslint.io/getting-started/typed-linting/

2. Fix type errors - as of writing, it shows 167 errors.

This is needed to prevent hard to find bugs in the future and keep the project type-safe.

Step 2 - TODO

Fix Eslint errors that are currently ignored. Most of them can be find under the following comment:

// TODO: https://github.com/grafana/k6-studio/issues/277