bui-themer: rename folder to mui-to-bui

Signed-off-by: Patrik Oldsberg <poldsberg@gmail.com>

plugins/mui-to-bui/package.json

@@ -16,7 +16,7 @@
   "repository": {
     "type": "git",
     "url": "https://github.com/backstage/backstage",
-    "directory": "plugins/bui-themer"
+    "directory": "plugins/mui-to-bui"
   },
   "license": "Apache-2.0",
   "sideEffects": false,

yarn.lock

@@ -5708,9 +5708,9 @@ __metadata:
   languageName: unknown
   linkType: soft
 
-"@backstage/plugin-mui-to-bui@workspace:^, @backstage/plugin-mui-to-bui@workspace:plugins/bui-themer":
+"@backstage/plugin-mui-to-bui@workspace:^, @backstage/plugin-mui-to-bui@workspace:plugins/mui-to-bui":
   version: 0.0.0-use.local
-  resolution: "@backstage/plugin-mui-to-bui@workspace:plugins/bui-themer"
+  resolution: "@backstage/plugin-mui-to-bui@workspace:plugins/mui-to-bui"
   dependencies:
     "@backstage/cli": "workspace:^"
     "@backstage/core-compat-api": "workspace:^"