Web UI: Migrate from CRA to Vite

[Scc33]

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Reference Issues/PRs

Fixes #565

What does this implement/fix? Explain your changes.

High Level

• Migrated from CRA to Vite
• Updates the Web UI to use Vite as the frontend tooling

Technicals

• Moved the index.html to the top level of the frontend directory (also updated the page title to SWE-agent :))
• Added Vite and the Vite React plugin to the package.json and updated the start script to use Vite
• Created a Vite config
  • Vite is configured to start on the 3000 port (same as the UI port from before)
  • All the React files were .js so I had to explicitly tell Vite that those .js files should be treated as jsx

[klieret]

Thank you for the PR, I wasn't aware that react-scripts is deprecated. However, I'm getting the following error when I run this:

  at decodeURI (<anonymous>)
    at viteTransformMiddleware (file:///Users/fuchur/Documents/24/git_sync/SWE-agent/sweagent/frontend/node_modules/vite/dist/node/chunks/dep-DEPSZ3SS.js:64834:19)
    at call (file:///Users/fuchur/Documents/24/git_sync/SWE-agent/sweagent/frontend/node_modules/vite/dist/node/chunks/dep-DEPSZ3SS.js:43006:7)
    at next (file:///Users/fuchur/Documents/24/git_sync/SWE-agent/sweagent/frontend/node_modules/vite/dist/node/chunks/dep-DEPSZ3SS.js:42950:5)
    at viteServePublicMiddleware (file:///Users/fuchur/Documents/24/git_sync/SWE-agent/sweagent/frontend/node_modules/vite/dist/node/chunks/dep-DEPSZ3SS.js:54721:20)
    at call (file:///Users/fuchur/Documents/24/git_sync/SWE-agent/sweagent/frontend/node_modules/vite/dist/node/chunks/dep-DEPSZ3SS.js:43006:7)
    at next (file:///Users/fuchur/Documents/24/git_sync/SWE-agent/sweagent/frontend/node_modules/vite/dist/node/chunks/dep-DEPSZ3SS.js:42950:5)
    at viteHMRPingMiddleware (file:///Users/fuchur/Documents/24/git_sync/SWE-agent/sweagent/frontend/node_modules/vite/dist/node/chunks/dep-DEPSZ3SS.js:66223:13)
    at call (file:///Users/fuchur/Documents/24/git_sync/SWE-agent/sweagent/frontend/node_modules/vite/dist/node/chunks/dep-DEPSZ3SS.js:43006:7)
    at next (file:///Users/fuchur/Documents/24/git_sync/SWE-agent/sweagent/frontend/node_modules/vite/dist/node/chunks/dep-DEPSZ3SS.js:42950:5