Set Up Linters and Code Style Checkers

[mikepapadim]

Introduce basic code quality tools for both Java and Python code in the repo. This helps ensure formatting and best practices are followed consistently across contributors.

✅ Tasks

You don’t need to do all of them in one go — even completing just one is helpful!

0️⃣ Java Linter & Formatter

• Add Checkstyle using the default or Google style in pom.xml or build.gradle
• Add config file (e.g., checkstyle.xml)
• Add GitHub Action to run mvn checkstyle:check or gradle check

1️⃣ Java Auto-Formatter

• Add Spotless (Google Java Format) via Gradle or Maven
• Add commands like ./gradlew spotlessApply or mvn spotless:apply

2️⃣ Python Formatter (for auxiliary Python scripts)

• Add Black formatter (black .)
• Add a GitHub Action to check formatting, e.g.:

name: Python Format Check

on: [push, pull_request]

jobs:
  black-check:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
      - name: Install Black
        run: pip install black
      - name: Check formatting with Black
        run: black --check .
3️⃣ .editorconfig