tcp stack 6k, move message shuntingYard to scheduler

src/web/WebSchedulerService.cpp

@@ -459,6 +459,11 @@ void WebSchedulerService::loop() {
     static uint32_t last_uptime_min = 0;
     static uint32_t last_uptime_sec = 0;
 
+    if (!raw_value.empty()) { // process a value from system/message command
+        computed_value = compute(raw_value);
+        raw_value.clear();
+    }
+
     // get list of scheduler events and exit if it's empty
     if (scheduleItems_->empty()) {
         return;

src/web/WebSchedulerService.h

@@ -86,6 +86,9 @@ class WebSchedulerService : public StatefulService<WebScheduler> {
     uint8_t count_entities(bool cmd_only = false);
     bool    onChange(const char * cmd);
 
+    std::string raw_value;
+    std::string computed_value;
+
 #if defined(EMSESP_TEST)
     void load_test_data();
 #endif