Update `_stderr_write` for orca

base/runtime/os_specific_orca.odin

@@ -2,13 +2,26 @@
 //+private
 package runtime
 
-// TODO
-// foreign import 
-// fd_write :: proc "contextless" ()
-import "core:sys/wasm/wasi"
+@(private="file")
+log_level :: enum i32 {
+	ERROR,
+	WARNING,
+	INFO,
+}
+
+@(private="file", default_calling_convention="c")
+foreign {
+	oc_log_ext :: proc(
+		level: log_level,
+		function: cstring,
+		file: cstring,
+		line: i32,
+		fmt: cstring,
+		#c_vararg args: ..any,
+	) ---
+}
 
 _stderr_write :: proc "contextless" (data: []byte) -> (int, _OS_Errno) {
-	data := (wasi.ciovec_t)(data)
-	n, err := wasi.fd_write(1, {data})
-	return int(n), _OS_Errno(err)
+	oc_log_ext(.ERROR, "", "", 0, "%.*s", i32(len(data)), raw_data(data))
+	return len(data), 0
 }