feat: add Windows-specific modules and enhance program registration

- Add new modules for Windows command line handling (wincmd) and registry extensions (winreg_extra)
- Replace Manner struct with simple String and add identifier validation
- Update WFAdd function signature and add new WFStartup/WFShutdown functions
- Implement ExpandString wrapper for registry operations

wfassoc_dylib/src/lib.rs

@@ -76,6 +76,22 @@ fn clear_last_error() {
 // endregion
 
 #[unsafe(no_mangle)]
-pub extern "C" fn WFAdd(left: u32, right: u32) -> u32 {
-    left + right
+pub extern "C" fn WFStartup() -> bool {
+    false
+}
+
+#[unsafe(no_mangle)]
+pub extern "C" fn WFShutdown() -> bool {
+    false
+}
+
+#[unsafe(no_mangle)]
+pub extern "C" fn WFGetLastError() -> *const c_char {
+    get_last_error()
+}
+
+#[unsafe(no_mangle)]
+pub extern "C" fn WFAdd(left: u32, right: u32, rv: *mut u32) -> bool {
+    unsafe { *rv = left + right; }
+    return true;
 }