Remove test package

Mocha's recursive search feature finds all files and then removes paths
that match the exclution filter, except that the globstar filter doesn't
match directories with a dot in them which is created by pnpm.  Avoid
this madness by removing the test package.

package.json

@@ -2,7 +2,7 @@
   "name": "root",
   "private": true,
   "scripts": {
-    "test": "mocha --check-leaks -R spec --exclude \"**/node_modules/**\" --recursive test plugins/global_chat/test plugins/research_sync/test plugins/statistics_exporter/test plugins/subspace_storage/test plugins/player_auth/test",
+    "test": "mocha --check-leaks -R spec --recursive test \"plugins/*/test/**\"",
     "fast-test": "FAST_TEST=y pnpm test",
     "cover": "nyc pnpm test",
     "fast-cover": "FAST_TEST=y nyc pnpm test",
@@ -21,10 +21,21 @@
     "node": ">=12"
   },
   "devDependencies": {
+    "@clusterio/ctl": "workspace:*",
+    "@clusterio/lib": "workspace:*",
+    "@clusterio/master": "workspace:*",
+    "@clusterio/slave": "workspace:*",
     "eslint": "^7.25.0",
     "eslint-plugin-node": "^11.1.0",
+    "express": "^4.16.2",
+    "form-data": "^4.0.0",
+    "fs-extra": "^8.1.0",
     "jsdoc": "^3.6.6",
-    "mocha": "^8.4.0",
-    "nyc": "^15.1.0"
+    "jsonwebtoken": "^8.2.1",
+    "jszip": "^3.2.2",
+    "mocha": "^9.2.2",
+    "node-forge": "^0.10.0",
+    "nyc": "^15.1.0",
+    "phin": "^3.5.1"
   }
 }

test/package.json

@@ -1,20 +0,0 @@
-{
-  "name": "test",
-  "private": true,
-  "engines": {
-    "node": ">=12"
-  },
-  "dependencies": {
-    "@clusterio/ctl": "^2.0.0-alpha.6",
-    "@clusterio/lib": "^2.0.0-alpha.6",
-    "@clusterio/master": "^2.0.0-alpha.6",
-    "@clusterio/slave": "^2.0.0-alpha.6",
-    "express": "^4.16.2",
-    "form-data": "^4.0.0",
-    "fs-extra": "^8.1.0",
-    "jsonwebtoken": "^8.2.1",
-    "jszip": "^3.2.2",
-    "node-forge": "^0.10.0",
-    "phin": "^3.5.1"
-  }
-}