feat(errors): add stable error propagation

firmware/libs/kaptan-err-propagate-macros/tests/ui/duplicate_id_across_enums.rs

@@ -0,0 +1,37 @@
+extern crate self as kaptan_err_propagate;
+
+use kaptan_err_propagate_macros::KaptanError;
+
+#[derive(Clone, Copy)]
+pub struct ErrorId(u16);
+
+impl ErrorId {
+    pub const fn new(id: u16) -> Self {
+        Self(id)
+    }
+
+    pub const fn get(self) -> u16 {
+        self.0
+    }
+}
+
+pub trait ErrorReport {
+    fn error_id(&self) -> ErrorId;
+}
+
+#[derive(Debug, KaptanError)]
+enum FirstError {
+    #[kaptan_error(id = 77)]
+    Failed,
+}
+
+#[derive(Debug, KaptanError)]
+enum SecondError {
+    #[kaptan_error(id = 77)]
+    Failed,
+}
+
+fn main() {
+    let _ = FirstError::Failed.error_id();
+    let _ = SecondError::Failed.error_id();
+}