Adding linting plugin to web modeler

[Martin]

Hi,
camunda-modeler-linter-plugin is bpmn-js-bpmnlint bundled as a modeler plugin.

To use it in a bpmn-js instance, you want to use this Repo: GitHub - bpmn-io/bpmn-js-bpmnlint: A bpmnlint plug-in for bpmn-js.