CommandDelete: refactor: split handle to several methods

cli/commanddelete.h

@@ -8,6 +8,10 @@ class CommandDelete : public Command
 	using Command::Command;
 
 	int handle(QStringList arguments) override;
+
+  private:
+	int removeNonExistent(QSqlDatabase &db, bool verbose, bool dryRun, QString pattern);
+	int removePaths(const QStringList &paths, QSqlDatabase &db, bool verbose, bool dryRun);
 };
 
 #endif // COMMANDDELETE_H