[N/A] simplifies eslint configuration

[agnlez]

General description

This PR aims to simplify the current eslint configuration by:

• removal of tsconfig.eslint.json middleware file.
• updating eslint and its plugins/configs to latest versions.
• removal of unnecessary plugins (like eslint-plugin-import, eslint-import-resolver-typescript) relying more on the NextJS out of the box configuration.
• Additionally, now JS files are treated as ES-modules instead of CommonJS script for most of cases.

Designs

Link to the related design prototypes (if applicable)

Testing instructions

Provide minimal instructions on how to test this PR.

• Apart from the added feature / bug fix, check overall performance, styling...

Checklist before merging

• Branch name / PR includes the related Jira ticket Id.
• Tests to check core implementation / bug fix added.
• All checks in Continuous Integration workflow pass.
• Feature functionally tested by reviewer(s).
• Code reviewed by reviewer(s).
• Documentation updated (README, CHANGELOG...) (if required)

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