Salmanap/chrome extension routing (#511)

* first commit of the chatGPT selector

* stashing changes as checkpoint

* pending changes for chrome extension

* commiting a working version

* converting conversation into messages object

* working version of the extension

* working version with fixed styling and better tested

* fixed the issue that the drop down was too small, and fixed the issue where the route was not displayed on the screen

* updating folder with README.md

* fixes for default model, and to update the manifest.json file

* made changes to the dark mode. improved styles

* fix installation bug

* added dark mode

* fixed default model selection

* fixed the scrolling issue

* Update README.md

* updated content.js to update the labels even when default model

* fixed readme

* upddated the title of the packag

* removing the unnecessary permissions

---------

Co-authored-by: Salman Paracha <salmanparacha@MacBook-Pro-329.local>
Co-authored-by: cotran <cotran2@utexas.edu>
Co-authored-by: Shuguang Chen <54548843+nehcgs@users.noreply.github.com>

demos/use_cases/chatgpt-preference-model-selector/package.json

@@ -0,0 +1,33 @@
+{
+  "name": "preference-selector-extension",
+  "version": "0.1.0",
+  "private": true,
+  "homepage": ".",
+  "dependencies": {
+    "react": "^18.3.1",
+    "react-dom": "^18.3.1"
+  },
+  "scripts": {
+    "start": "react-scripts start",
+    "build": "node src/build.js",
+    "test": "react-scripts test"
+  },
+  "devDependencies": {
+    "autoprefixer": "^10.4.19",
+    "postcss": "^8.4.38",
+    "react-scripts": "5.0.1",
+    "tailwindcss": "^3.4.4"
+  },
+  "browserslist": {
+    "production": [
+      ">0.2%",
+      "not dead",
+      "not op_mini all"
+    ],
+    "development": [
+      "last 1 chrome version",
+      "last 1 firefox version",
+      "last 1 safari version"
+    ]
+  }
+}