Setup lint rules

[kibettheophilus]

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How can this PR be tested?

TBA

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Thank you for opening a Pull Request!
Before submitting your PR, there are a few things you can do to make sure it goes smoothly:

• Ensure your branch is up to date with develop branch.
• Ensure your branch runs without breaking.
• Ensure you solved any merge conflicts.
• Smaller PRs for the ease of reviewing
• Make sure to open a GitHub issue as a bug/feature request before writing your code! This means that we can discuss the change, evaluate designs, and agree on the general idea
• Ensure the tests and linter pass (./gradlew --init-script gradle/init.gradle.kts spotlessApply to automatically apply formatting)
• Appropriate docs were updated (You are adding code so...)
• Tests have been written

Is this your first Pull Request?

• Run ./tools/setup.sh
• Import the code formatting style as explained in the setup script.

Screenshot

N/A