Add automatic code formatting with detekt

[kiftio]

What changes are you making?

Add automated code formatting with detekt, and add a pre-commit hook, to prevent issues like missing import optimization and inconsistent code formatting

Note: we may want to hold off to make the diff between main and development / prototype/development smaller

Changes

1. Added detekt-formatting plugin
2. Configured formatting rules (lib/detekt.config.yml). Uses detekt's default formatting rules (ktlint-based)
3. Added pre-commit hook (.git/hooks/pre-commit.d/010-detekt-format)
4. Fixed license header check script to exclude entire build/ directory
5. Applied initial formatting

How to test

./gradlew detekt --auto-correct
./scripts/check_license_headers.rb
./gradlew clean test

Before you merge

Important

• I've added tests to support my implementation
• I have read and agree with the Contribution Guidelines.
• I have read and agree with the Code of Conduct.
• I've updated the README.

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Checklist for releasing a new version

• I have bumped the version number in the build.gradle file
• I have updated the versions in the README.md for both Gradle and Maven.

Tip

See the Contributing documentation for instructions on how to publish a new version of the library.