feat(plugins): automatically prefix plugins when loading if necessary

I.e. when specifying only "--plugin generate-js" Emigrate will load the @emigrate/plugin-generate-js plugin.

packages/plugin-tools/package.json

@@ -32,5 +32,8 @@
   "license": "MIT",
   "devDependencies": {
     "@emigrate/tsconfig": "workspace:*"
+  },
+  "dependencies": {
+    "import-from-esm": "1.2.1"
   }
 }