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/ron_test.rs

@@ -0,0 +1,49 @@
+use ron::ser::{to_string_pretty, PrettyConfig};
+use serde::Serialize;
+use std::{collections::HashMap, iter::FromIterator};
+
+#[derive(Serialize)]
+struct Config {
+    float: (f32, f64),
+    tuple: TupleStruct,
+    map: HashMap<u8, char>,
+    nested: Nested,
+    var: Variant,
+    array: Vec<()>,
+}
+
+#[derive(Serialize)]
+struct TupleStruct((), bool);
+
+#[derive(Serialize)]
+enum Variant {
+    A(u8, &'static str),
+}
+
+#[derive(Serialize)]
+struct Nested {
+    a: String,
+    b: char,
+}
+
+fn main() {
+    let data = Config {
+        float: (2.18, -1.1),
+        tuple: TupleStruct((), false),
+        map: HashMap::from_iter(vec![(0, '1'), (1, '2'), (3, '5'), (8, '1')]),
+        nested: Nested {
+            a: "Hello from \"RON\"".to_string(),
+            b: 'b',
+        },
+        var: Variant::A(!0, ""),
+        array: vec![(); 3],
+    };
+
+    let pretty = PrettyConfig::new()
+        .with_depth_limit(2)
+        .with_separate_tuple_members(true)
+        .with_enumerate_arrays(true);
+    let s = to_string_pretty(&data, pretty).expect("Serialization failed");
+
+    println!("{}", s);
+}