build and test on pull request

Workflow runs for build and test on pull request

• Create CODE_OF_CONDUCT.md

  completed successfully:
  build and test on pull request#3:Pull request#2openedbyclouless
  feature/code-of-conduct

  Feb 15, 20261m 10s
  More actions for workflow run 3

• maven build with ci

  completed successfully:
  build and test on pull request#2:Pull request#1synchronizebyclouless
  feature/maven-build

  Feb 14, 20261m 23s
  More actions for workflow run 2

• maven build with ci

  completed successfully:
  build and test on pull request#1:Pull request#1openedbyclouless
  feature/maven-build

  Feb 14, 20261m 12s
  More actions for workflow run 1