Implement preinit related features in Rust

native/src/core/include/core.hpp

@@ -42,7 +42,6 @@ extern std::string native_bridge;
 
 void reset_zygisk(bool restore);
 int connect_daemon(int req, bool create = false);
-std::string find_preinit_device();
 void unlock_blocks();
 
 // Poll control

native/src/core/include/daemon.hpp

@@ -26,4 +26,9 @@ private:
 };
 
 const char *get_magisk_tmp();
+
+// Rust bindings
 static inline rust::Utf8CStr get_magisk_tmp_rs() { return get_magisk_tmp(); }
+static inline rust::String resolve_preinit_dir_rs(rust::Utf8CStr base_dir) {
+    return resolve_preinit_dir(base_dir.c_str());
+}