Fix rules-to-wiki and generalize some code for extension's equivalents (#696)

* Fix rules-to-wiki output

* Publicize OLD_OUT in RulePrinter to simplify extension's equivalents

And rename to CarpetRulePrinter because of the same reason

.github/workflows/publish-release.yml

@@ -159,7 +159,8 @@ jobs:
             "id": "carpet",
             "version": "1.4.11",
             "entrypoints": {
-              "preLaunch": [ "carpet.utils.RulePrinter" ]
+              "server": [ "carpet.utils.CarpetRulePrinter" ],
+              "preLaunch": [ "carpet.utils.CarpetRulePrinter" ]
             }
            }' > fabric.mod.json
           cd ../../../