add plugin metadata to all plugin packages

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

plugins/devtools-backend/package.json

@@ -1,31 +1,41 @@
 {
   "name": "@backstage/plugin-devtools-backend",
   "version": "0.3.5-next.2",
-  "main": "src/index.ts",
-  "types": "src/index.ts",
-  "license": "Apache-2.0",
+  "backstage": {
+    "role": "backend-plugin",
+    "pluginId": "devtools",
+    "pluginPackages": [
+      "@backstage/plugin-devtools",
+      "@backstage/plugin-devtools-backend",
+      "@backstage/plugin-devtools-common"
+    ]
+  },
   "publishConfig": {
     "access": "public",
     "main": "dist/index.cjs.js",
     "types": "dist/index.d.ts"
   },
-  "backstage": {
-    "role": "backend-plugin"
-  },
   "homepage": "https://backstage.io",
   "repository": {
     "type": "git",
     "url": "https://github.com/backstage/backstage",
     "directory": "plugins/devtools-backend"
   },
+  "license": "Apache-2.0",
+  "main": "src/index.ts",
+  "types": "src/index.ts",
+  "files": [
+    "dist",
+    "config.d.ts"
+  ],
   "scripts": {
-    "start": "backstage-cli package start",
     "build": "backstage-cli package build",
-    "lint": "backstage-cli package lint",
-    "test": "backstage-cli package test",
     "clean": "backstage-cli package clean",
+    "lint": "backstage-cli package lint",
     "prepack": "backstage-cli package prepack",
-    "postpack": "backstage-cli package postpack"
+    "postpack": "backstage-cli package postpack",
+    "start": "backstage-cli package start",
+    "test": "backstage-cli package test"
   },
   "dependencies": {
     "@backstage/backend-common": "workspace:^",
@@ -60,9 +70,5 @@
     "@types/yarnpkg__lockfile": "^1.1.4",
     "supertest": "^6.2.4"
   },
-  "files": [
-    "dist",
-    "config.d.ts"
-  ],
   "configSchema": "config.d.ts"
 }