chore: add pre-commit hook

[sdhuka]

Issue #, if available:

Description of changes:

• Add pre-commit hook to run ktlintFormat

How did you test these changes?

➜  git commit -a -m "chore: add pre-commit hook"
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Running git pre-commit hook
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Deprecated Gradle features were used in this build, making it incompatible with Gradle 7.0.
Use '--warning-mode all' to show the individual deprecation warnings.
See https://docs.gradle.org/6.8.2/userguide/command_line_interface.html#sec:command_line_warnings

Documentation update required?

• [x] No
• [ ] Yes (Please include a PR link for the documentation update)

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.