Move keytar and keymap to optional dependencies.

* See coder/code-server#4179

Author: GirlBossRush

package.json

@@ -69,10 +69,8 @@
     "https-proxy-agent": "^2.2.3",
     "iconv-lite-umd": "0.6.8",
     "jschardet": "3.0.0",
-    "keytar": "7.2.0",
     "minimist": "^1.2.5",
     "native-is-elevated": "0.4.3",
-    "native-keymap": "2.2.1",
     "native-watchdog": "1.3.0",
     "node-pty": "0.11.0-beta7",
     "nsfw": "2.1.2",
@@ -137,7 +135,6 @@
     "cssnano": "^4.1.11",
     "debounce": "^1.0.0",
     "deemon": "^1.4.0",
-    "electron": "13.1.8",
     "eslint": "6.8.0",
     "eslint-plugin-header": "3.1.1",
     "eslint-plugin-jsdoc": "^19.1.0",
@@ -227,6 +224,9 @@
     "url": "https://github.com/microsoft/vscode/issues"
   },
   "optionalDependencies": {
+    "electron": "13.1.8",
+    "keytar": "7.2.0",
+    "native-keymap": "2.2.1",
     "vscode-windows-registry": "1.0.3",
     "windows-foreground-love": "0.4.0",
     "windows-mutex": "0.4.1",