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, 13 insertions, 0 deletions

diff --git a/mingling_pathf/test/src/test_files/test_group.rs b/mingling_pathf/test/src/test_files/test_group.rs
new file mode 100644
index 0000000..92c8cda
--- /dev/null
+++ b/mingling_pathf/test/src/test_files/test_group.rs
@@ -0,0 +1,13 @@
+mingling::macros::group!(Group1);
+mingling::macros::group!(GroupAlias1 = std::io::Error);
+
+group!(Group2);
+group!(GroupAlias2 = std::num::ParseIntError);
+
+pub mod sub {
+    mingling::macros::group!(Group1);
+    mingling::macros::group!(GroupAlias1 = std::io::Error);
+
+    group!(Group2);
+    group!(GroupAlias2 = std::num::ParseIntError);
+}