Add StatusMessage module and config overrides (#9351)

* Add StatusMessage module and config overrides

* Trunk

* Don't reboot node simply for a StatusMessage config update

src/modules/StatusMessageModule.h

@@ -0,0 +1,35 @@
+#pragma once
+#if !MESHTASTIC_EXCLUDE_STATUS
+#include "SinglePortModule.h"
+#include "configuration.h"
+
+class StatusMessageModule : public SinglePortModule, private concurrency::OSThread
+{
+
+  public:
+    /** Constructor
+     * name is for debugging output
+     */
+    StatusMessageModule()
+        : SinglePortModule("statusMessage", meshtastic_PortNum_NODE_STATUS_APP), concurrency::OSThread("StatusMessage")
+    {
+        if (moduleConfig.has_statusmessage && moduleConfig.statusmessage.node_status[0] != '\0') {
+            this->setInterval(2 * 60 * 1000);
+        } else {
+            this->setInterval(1000 * 12 * 60 * 60);
+        }
+        // TODO: If we have a string, set the initial delay (15 minutes maybe)
+    }
+
+    virtual int32_t runOnce() override;
+
+  protected:
+    /** Called to handle a particular incoming message
+     */
+    virtual ProcessMessage handleReceived(const meshtastic_MeshPacket &mp) override;
+
+  private:
+};
+
+extern StatusMessageModule *statusMessageModule;
+#endif