Move vscode-languageclient to dev dependency

packages/adl-vscode/package.json

@@ -36,7 +36,6 @@
     "format": "prettier --write --config ../../.prettierrc.json --ignore-path ../../.prettierignore \"**/*.{ts,js,json}\""
   },
   "dependencies": {
-    "vscode-languageclient": "^7.0.0"
   },
   "devDependencies": {
     "@rollup/plugin-commonjs": "^17.1.0",
@@ -46,7 +45,8 @@
     "onigasm": "~2.2.5",
     "rollup": "^2.41.4",
     "typescript": "~4.1.5",
-    "vsce": "^1.85.1"
+    "vsce": "^1.85.1",
+    "vscode-languageclient": "^7.0.0"
   },
   "contributes": {
     "languages": [