Enable CI build

[teogor]

Implement CI Workflow for KSP Plugin Build

This pull request introduces a continuous integration (CI) workflow for our Querent plugin, automating the build process on every push and pull request event to the main branch.

Changes:

• Created a new workflow file named plugin-ci.yml.
• Configured the workflow to:
  • Check out the code from the repository.
  • Set up the necessary environment for building Querent and examples.
  • Cache Gradle and Gradle wrapper for faster builds.
  • Make the Gradle wrapper executable.
  • Run the build process using ./gradlew build (or the appropriate command for your setup).
• Updated documentation to reflect the new CI workflow.

Benefits:

• Automates the build process, saving developers time and effort.
• Catches build failures early, ensuring code quality and consistency.
• Improves testing efficiency by potentially integrating tests within the workflow.