Add GitHub Actions CI workflow

[splusb]

Description

This PR introduces a GitHub Actions-based CI workflow to the develop branch of the log-parser-plugin.

Key additions:

• Adds .github/workflows/ci.yml for continuous integration
• Builds the plugin using Java 11 and Maven
• Runs static analysis checks via PMD
• Ensures future changes are automatically validated on push and PR

Additionally, the plugin has been tested using the Jenkins Plugin Compat Tester (PCT) to ensure compatibility with the latest Jenkins core.

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Relevant issues

None opened — this is part of general modernization effort aligned with GSoC 2025 Plugin Modernizer Improvements.

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Type of change

• New feature (adds CI functionality)
• Bug fix
• Breaking change
• Documentation update

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How Has This Been Tested?

✅ CI workflow triggered successfully on push and pull_request events for the develop branch
✅ Build and PMD checks passed on GitHub Actions using Java 11
✅ Verified plugin compatibility with Jenkins core 2.440 using Plugin Compat Tester

PCT command:

docker run --rm \
  -v "$PWD":/plugin \
  jenkins/plugin-compat-tester \
  -Dplugin=log-parser-plugin \
  -DreportFile=target/pct-report.xml

[hypery2k]

thanks for the PR, but why didn't you just added the PMD check to the existing build.yml besides pmd everything else is alread there

[hypery2k]

please add pmd to build.yml

[splusb]

please add pmd to build.yml

I have added PMD check to the existing build.yml

[hypery2k]

thanks