added docker compose and plugins for openwebrx installation

docker/openwebrx/plugins/receiver/notify/README.md

@@ -0,0 +1,25 @@
+---
+layout: page
+title: "OpenWebRX+ Receiver Plugin: Notify"
+permalink: /receiver/notify
+---
+
+This is `utility` plugin. It provides notifications for other plugins.
+
+## Usage
+
+```js
+Plugins.notify.show('some notification');
+```
+
+## Load
+
+Add this line in your `init.js` file:
+
+```js
+await Plugins.load('https://0xaf.github.io/openwebrxplus-plugins/receiver/notify/notify.js');
+```
+
+## init.js
+
+Learn how to [load plugins](/openwebrxplus-plugins/#load-plugins).

docker/openwebrx/plugins/receiver/notify/notify.css

@@ -0,0 +1,21 @@
+/*
+ * Plugin: Notifications for other plugins
+ *
+ */
+
+#plugins-notification {
+  text-align: center;
+  vertical-align: middle;
+  width: 200px;
+  position: absolute;
+  bottom: 50px;
+  left: calc((100vw / 2) - 100px);
+  border: 2px solid white;
+  background: #333;
+  margin: 20px;
+  display: none;
+  opacity: 0.9;
+  color: white;
+  border-radius: 10px;
+  font-family: monospace;
+}

docker/openwebrx/plugins/receiver/notify/notify.js

@@ -0,0 +1,37 @@
+/*
+ * Plugin: Provides notifications for other plugins
+ *
+ * Usage:
+ *   Plugins.notify.send('some notification');
+ *
+ * License: MIT
+ * Copyright (c) 2023 Stanislav Lechev [0xAF], LZ2SLL
+ *
+ */
+
+// Notify plugin version
+Plugins.notify._version = 0.1;
+
+// Initialize the plugin
+Plugins.notify.init = function () {
+  Plugins.notify.show = function (text) {
+    // create the message div if it's not there
+    if ($("#plugins-notification").length < 1)
+      $("body").append("<div id='plugins-notification'></div>");
+
+    // set the message text
+    $("#plugins-notification").html(text);
+
+    // show the message
+    $("#plugins-notification").fadeIn('fast');
+
+    // clear the timeout of previous message (if exists)
+    clearTimeout(Plugins.notify.notify_timeout);
+
+    // timeout the current message
+    Plugins.notify.notify_timeout = setTimeout('$("#plugins-notification").fadeOut("fast")', 1000);
+
+  };
+
+  return true;
+}