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, 33 insertions, 0 deletions

diff --git a/mingling_pathf/test/src/test_files/test_help.rs b/mingling_pathf/test/src/test_files/test_help.rs
new file mode 100644
index 0000000..52d1408
--- /dev/null
+++ b/mingling_pathf/test/src/test_files/test_help.rs
@@ -0,0 +1,33 @@
+#[mingling::macros::help]
+fn my_help1(prev: Some1) {
+}
+
+#[mingling::macros::help]
+pub fn my_help2(prev: Some2) {
+}
+
+#[help]
+fn my_help3(prev: Some3) {
+}
+
+#[help]
+pub fn my_help4(prev: Some4) {
+}
+
+pub mod sub {
+    #[mingling::macros::help]
+    fn my_help1(prev: Some1) {
+    }
+
+    #[mingling::macros::help]
+    pub fn my_help2(prev: Some2) {
+    }
+
+    #[help]
+    fn my_help3(prev: Some3) {
+    }
+
+    #[help]
+    pub fn my_help4(prev: Some4) {
+    }
+}