feat(pathf): add build-time type path resolution system

Add `mingling_pathf` sub-crate and `pathf` feature for automatic
resolution of Mingling type module paths at build time. Scans source
files, identifies macro invocations via pattern matchers, and generates
mapping files consumed by `gen_program!()`.

1 files changed, 26 insertions, 0 deletions

diff --git a/mingling_pathf/test/src/test_files/test_groupped_derive.rs b/mingling_pathf/test/src/test_files/test_groupped_derive.rs
new file mode 100644
index 0000000..f6c6fa9
--- /dev/null
+++ b/mingling_pathf/test/src/test_files/test_groupped_derive.rs
@@ -0,0 +1,26 @@
+#[derive(Groupped)]
+struct Derived1 {
+    value: String,
+}
+
+#[derive(Groupped, Debug, Clone)]
+struct Derived2 {
+    value: i32,
+}
+
+#[derive(GrouppedSerialize)]
+struct Derived3 {
+    value: bool,
+}
+
+pub mod sub {
+    #[derive(Groupped)]
+    struct Derived1 {
+        value: String,
+    }
+
+    #[derive(GrouppedSerialize)]
+    struct Derived3 {
+        value: bool,
+    }
+}