Make js-lint use local prettier config instead of target repo's prettier config

[CDeltakai]

Description

This PR implements a local prettier.config.mjs which js-lint will use for its prettier instead of the target repo's .prettier.rc.

Issues Fixed

• Fixes Make js-lint use its own .prettierrc instead the target repo's prettierrc #27

Tasks

• 1. Make js-lint use local prettier.config.mjs instead of target repo's .prettierc

Final checklist

• Domain specific tests
• Full tests
• Updated inline-comment documentation
• Lint fixed
• Squash and rebased
• Sanity check the final build