Initial commit, getting all the stuff from PlatformIO

.pio/libdeps/esp32dev/PicoMQTT/examples/server_local_subscribe/server_local_subscribe.ino

@@ -0,0 +1,57 @@
+#include <PicoMQTT.h>
+
+#if __has_include("config.h")
+#include "config.h"
+#endif
+
+#ifndef WIFI_SSID
+#define WIFI_SSID "WiFi SSID"
+#endif
+
+#ifndef WIFI_PASSWORD
+#define WIFI_PASSWORD "password"
+#endif
+
+PicoMQTT::ServerLocalSubscribe mqtt;
+unsigned long last_publish;
+
+static const char flash_string[] PROGMEM = "Hello from the broker's flash.";
+
+void setup() {
+    // Setup serial
+    Serial.begin(115200);
+
+    // Connect to WiFi
+    Serial.printf("Connecting to WiFi %s\n", WIFI_SSID);
+    WiFi.mode(WIFI_STA);
+    WiFi.begin(WIFI_SSID, WIFI_PASSWORD);
+    while (WiFi.status() != WL_CONNECTED) { delay(1000); }
+    Serial.printf("WiFi connected, IP: %s\n", WiFi.localIP().toString().c_str());
+
+    mqtt.begin();
+
+    mqtt.subscribe("picomqtt/foo", [](const char * payload) {
+        Serial.printf("Message received: %s\n", payload);
+    });
+}
+
+
+void loop() {
+    mqtt.loop();
+
+    if (millis() - last_publish >= 5000) {
+        // this will publish the message to subscribed clients and fire the local callback
+        mqtt.publish("picomqtt/foo", "hello from broker!");
+
+        // this will also work as usual and fire the callback
+        mqtt.publish_P("picomqtt/foo", flash_string);
+
+        // begin_publish will publish to clients, but it will NOT fire the local callback
+        auto publish = mqtt.begin_publish("picomqtt/foo", 33);
+        publish.write((const uint8_t *) "Message delivered to clients only", 33);
+        publish.send();
+
+        last_publish = millis();
+    }
+
+}