advotracker: reorganize the project using a crate based structure

* advotracker: the framework project
* crate/advotrackerdb: implementation of the database backend
* crate/advotrackerd: implementation of the backend (daemon)
* crate/adovtracker: implementaton of the application (CLI and GUI)

Signed-off-by: Ralf Zerres <ralf.zerres@networkx.de>

crates/advotracker_client/examples/messages_test/receiver/receiver_view.rs

@@ -0,0 +1,37 @@
+/*
+ * OrbTK - The Orbital Widget Toolkit
+ *
+ * Copyright 2021 Ralf Zerres <ralf.zerres@networkx.de>
+ * SPDX-License-Identifier: (0BSD or MIT)
+ */
+
+use orbtk::prelude::*;
+
+use crate::receiver::receiver_state::{TestMessageAction, ReceiverState};
+
+widget!(ReceiverView<ReceiverState>);
+
+impl Template for ReceiverView {
+    fn template(self, _id: Entity, bc: &mut BuildContext) -> Self {
+        self.name("ReceiverView")
+            .child(
+                Stack::new()
+                    .orientation("vertical")
+                    .spacing(16)
+                    .child(
+                        ProgressBar::new()
+                            .id("progress_bar")
+                            .build(bc)
+                    )
+                    .child(
+                        TextBox::new()
+                            .id("message_box")
+                            .h_align("center")
+                            .text("message received. Box toggled!")
+                            .visibility("hidden")
+                            .build(bc)
+                    )
+                    .build(bc)
+            )
+    }
+}