ModuleType is deprecated

[SingingBush]

We need to remove com.intellij.openapi.module.ModuleType from the plugin.xml:

<moduleType id="DLANGUAGE_MODULE" implementationClass="io.github.intellij.dlanguage.module.DlangModuleType"/>

and instead re-implement use cases using the correct approach. See notes regarding changes:

Defines a technology (language, framework, etc) to which a particular Module instance is related. Each Module belongs to some type (see get(Module)) and it can be used to provide custom UI for New Project and Project Structure dialogs, and to customize other feature of the IDE (e.g. enable some actions only for files in modules of a specific type).
Module Type concept is considered as outdated. Enabling some features only in modules of a specific type makes it harder to mix different technologies in the same source directory, and cause conflicts in configuration files when the same directory is opened in different IDEs.
If you need to show special kinds of projects in New Project wizard, register an implementation of com.intellij.ide.util.projectWizard.ModuleBuilder as an extension instead. If you need to allow users to configure something related to some technology in the IDE, use projectConfigurable for project-level settings and com.intellij.facet.Facet or com.intellij.openapi.roots.ui.configuration.ModuleConfigurationEditorProvider for module-level settings. If you need to make an action enabled in presence of a specific technology only, do this by looking for required files in the project directories, not by checking type of the current module.