setup main project layout

Co-authored-by: Clément Rehs <clement.rehs@epita.fr>

src/lib/database.rs

@@ -0,0 +1,15 @@
+use super::config::Configuration;
+
+///
+/// handle the database access
+///
+pub struct DbManager {
+	//
+}
+
+impl DbManager {
+	/// constructor
+	pub fn new(_config: &Configuration) -> Self {
+		todo!()
+	}
+}