Enable the OCL Validator plugin

[juancho0202]

Whenever the Riseclipse related roadblock is gone we need to enable the OCL Validator plugin adding the following entry to the plugins.js file:

{
    name: 'Validate using OCL',
    src: '/src/validators/CompasValidateSchema.js',
    icon: 'rule_folder',
    default: true,
    kind: 'validator',
}

[juancho0202]

As part of the refactor of compas-open-scd to not be a fork anymore, we are removing this feature: #187
Once we active this again, we should take a look at how to re implement this feature.