Move plugins to Sol (#5622)

Co-authored-by: Nerixyz <nerixdev@outlook.de>
Co-authored-by: Rasmus Karlsson <rasmus.karlsson@pajlada.com>

src/controllers/plugins/PluginPermission.hpp

@@ -10,6 +10,8 @@ namespace chatterino {
 
 struct PluginPermission {
     explicit PluginPermission(const QJsonObject &obj);
+    // This is for tests
+    PluginPermission() = default;
 
     enum class Type {
         FilesystemRead,