refactor(firmware): centralize configuration and diagnostics

firmware/libs/kaptan-config-derive/tests/ui/duplicate_display_key.rs

@@ -0,0 +1,11 @@
+use kaptan_config_derive::Config;
+
+#[derive(Config)]
+struct DuplicateDisplayKey {
+    #[config(id = 1, key = "duplicate.key", unit = "count")]
+    first: u32,
+    #[config(id = 2, key = "duplicate.key", unit = "count")]
+    second: u32,
+}
+
+fn main() {}