sys: Clear project context when closing all providers, Display project name in window title (#860)

* clear project context when closing all providers

* Show project name on window title

* refactor RequestChangeWindowTitle to RequestUpdateWindowTitle

* add spaces

lib/libimhex/source/api/project_file_manager.cpp

@@ -73,7 +73,7 @@ namespace hex {
         }
 
         ProjectFile::s_currProjectPath = filePath;
-
+        EventManager::post<RequestUpdateWindowTitle>();
         return true;
     }
 
@@ -124,4 +124,12 @@ namespace hex {
         return !ProjectFile::s_currProjectPath.empty();
     }
 
+    void ProjectFile::clearPath() {
+        ProjectFile::s_currProjectPath.clear();
+    }
+    
+    std::fs::path ProjectFile::getPath() {
+        return ProjectFile::s_currProjectPath;
+    }
+
 }