Update the eslint-plugin-mozilla to the latest version (PR 10905 fo…

…llow-up)

This required adding a number of additional dependencies, based on https://dxr.mozilla.org/mozilla-central/rev/4aed8e10318f38571712350856bf9e61c5f84e1f/tools/lint/eslint/eslint-plugin-mozilla/package.json#32-37

package.json

@@ -14,9 +14,12 @@
     "core-js": "^2.6.9",
     "escodegen": "^1.12.0",
     "eslint": "^6.2.2",
+    "eslint-config-prettier": "^6.2.0",
+    "eslint-plugin-fetch-options": "^0.0.5",
     "eslint-plugin-import": "^2.18.2",
-    "eslint-plugin-mozilla": "1.2.1",
+    "eslint-plugin-mozilla": "^2.1.0",
     "eslint-plugin-no-unsanitized": "^3.0.2",
+    "eslint-plugin-prettier": "^3.1.0",
     "eslint-plugin-unicorn": "^10.0.0",
     "fancy-log": "^1.3.3",
     "globals": "^11.12.0",
@@ -33,6 +36,7 @@
     "merge-stream": "^1.0.1",
     "mkdirp": "^0.5.1",
     "node-ensure": "^0.0.0",
+    "prettier": "^1.18.2",
     "rimraf": "^2.7.1",
     "streamqueue": "^1.1.2",
     "systemjs": "^0.21.6",