Drop usage of component-helper

[elpoelma]

Overview

This PR drops all usages of the dynamic component helper in this package in preparation for embroider-compatibility.

This removal also causes a change in the variable-plugin insert-component API, the insert-components now need to be passed directly (instead of their path).

Before:

get variableTypes(): VariableConfig[] {
  return [
    {
      label: 'text',
      component: {
        path: 'variable-plugin/text/insert',
      },
    },
    {
      label: 'location',
      component: {
        path: 'variable-plugin/location/insert',
        options: {
          endpoint: 'https://dev.roadsigns.lblod.info/sparql',
        },
      },
    },
  ];
}

After:

import TextVariableInsertComponent from '@lblod/ember-rdfa-editor-lblod-plugins/components/variable-plugin/text/insert';
import LocationInsertComponent from '@lblod/ember-rdfa-editor-lblod-plugins/components/variable-plugin/location/insert';
...
get variableTypes() {
  return [
    {
      label: 'text',
      component: TextVariableInsertComponent,
    },
    {
      label: 'location',
      component: LocationInsertComponent,
      options: {
        endpoint: 'https://dev.roadsigns.lblod.info/sparql',
      },
    },
  ];
}

How to test/reproduce

• Start the dummy app
• Visit the regulatory statements page
• Check if inserting variables still works as expected

Checks PR readiness

• UI: works on smaller screen sizes
• UI: feedback for any loading/error states
• Check if dummy app is correctly updated
• Check cancel/go-back flows
• changelog
• npm lint

[elpoelma]

I replaced the usage of ComponentLike by typeof Component in order to remove the requirement for casting (as unknown as ComponentLike) of the components.