Project: Add mimeType() method

Add a method to retrieve the mime type of a project.

Change-Id: I9ae2cab987780597561a5ee164e2c2b9b9445e68
Reviewed-by: Eike Ziller <eike.ziller@qt.io>

src/plugins/projectexplorer/project.cpp

@@ -218,6 +218,11 @@ Core::Id Project::id() const
     return d->m_id;
 }
 
+QString Project::mimeType() const
+{
+    return document()->mimeType();
+}
+
 Core::IDocument *Project::document() const
 {
     QTC_CHECK(d->m_document);

src/plugins/projectexplorer/project.h

@@ -98,6 +98,8 @@ public:
     QString displayName() const;
     Core::Id id() const;
 
+    QString mimeType() const;
+
     Core::IDocument *document() const;
     Utils::FileName projectFilePath() const;
     Utils::FileName projectDirectory() const;