Add prettier

package.json

@@ -45,8 +45,8 @@
     "start:all": "echo THIS IS FOR LEGACY PURPOSES ONLY. && yarn start:build",
     "start:build": "babel src -w -s -d lib --verbose --extensions \".ts,.js\"",
     "lint": "yarn lint:types && yarn lint:js && yarn lint:style",
-    "lint:js": "eslint --max-warnings 0 src test cypress",
-    "lint:js-fix": "eslint --fix src test cypress",
+    "lint:js": "eslint --max-warnings 0 src test cypress && prettier --check .",
+    "lint:js-fix": "prettier --loglevel=warn --write . && eslint --fix src test cypress",
     "lint:types": "tsc --noEmit --jsx react && tsc --noEmit --jsx react -p cypress",
     "lint:style": "stylelint \"res/css/**/*.pcss\"",
     "test": "jest",
@@ -184,10 +184,11 @@
     "enzyme-to-json": "^3.6.2",
     "eslint": "8.28.0",
     "eslint-config-google": "^0.14.0",
+    "eslint-config-prettier": "^8.5.0",
     "eslint-plugin-deprecate": "^0.7.0",
     "eslint-plugin-import": "^2.25.4",
     "eslint-plugin-jsx-a11y": "^6.5.1",
-    "eslint-plugin-matrix-org": "0.8.0",
+    "eslint-plugin-matrix-org": "0.9.0",
     "eslint-plugin-react": "^7.28.0",
     "eslint-plugin-react-hooks": "^4.3.0",
     "eslint-plugin-unicorn": "^45.0.0",
@@ -203,10 +204,12 @@
     "matrix-web-i18n": "^1.3.0",
     "node-fetch": "2",
     "postcss-scss": "^4.0.4",
+    "prettier": "2.8.0",
     "raw-loader": "^4.0.2",
     "react-test-renderer": "^17.0.2",
     "rimraf": "^3.0.2",
     "stylelint": "^14.9.1",
+    "stylelint-config-prettier": "^9.0.4",
     "stylelint-config-standard": "^29.0.0",
     "stylelint-scss": "^4.2.0",
     "typescript": "4.9.3",