Rust: update build_rule.template to copy symbols to OUTPUT

Author: antklein

BaseTools/Conf/build_rule.template

@@ -294,6 +294,7 @@
         $(CP) $(DEBUG_DIR)(+)$(MODULE_NAME).map  $(OUTPUT_DIR)(+)$(MODULE_NAME).map
         $(CP) $(DEBUG_DIR)(+)$(MODULE_NAME).efi $(OUTPUT_DIR)(+)$(MODULE_NAME).efi
         $(CP) $(OUTPUT_DIR)(+)$(MODULE_NAME).efi $(BIN_DIR)(+)$(MODULE_NAME).efi
+        $(CP) $(DEBUG_DIR)(+)$(TARGET_TRIPLE)(+)$(RUST_TARGET)(+)$(MODULE_NAME).pdb $(OUTPUT_DIR)
 
 [Static-Library-File.RUST_MODULE]
     <InputFile>