Adding check for unsatisfyable requirements in a remote task

libdaggy/include/daggy/executors/task/DaggyRunnerTaskExecutor.hpp

@@ -74,6 +74,8 @@ namespace daggy::executors::task {
 
     daggy_runner::Capacity getRunnerCapacity(const std::string &runnerURL);
 
+    std::vector<daggy_runner::Capacity> runnersMaxCapacities_;
+
     std::mutex runnersGuard_;
     std::condition_variable runnersCV_;
     std::unordered_map<std::string, daggy_runner::Capacity> runners_;