Replace vite module server with wmr/custom module server

[calebeby]

Reviewing

It might be easiest to review in:
https://github1s.com/cloudfour/pleasantest/pull/115

To review the changes to src/module-server/rollup-plugin-container.ts, use this diff which shows the differences from WMR's version of that file.

Remaining issues:

Source Maps

Since WMR does not support source maps, Pleasantest's code to fix the stack traces from in-browser errors does not work. So I commented out the source-map-dependent code in Pleasantest for now. I will follow up with a PR to add source map support.

For now, errors from runJS/runJS-imported code look like this 🤮:

I added .skip for the tests for this functionality, so in the follow-up PR I'll re-enable those tests.

Configurability of module server

Right now the configuration is not exposed. This is a pretty easy feature to add but I figured I'd leave it for a follow-up PR since this PR is already really big, only to get the tests passing.

Proposed API:

import { withBrowser, configure } from 'pleasantest'

// Global default configuration
configure({
  plugins: [
    /* some rollup plugins here */
  ],
  esbuild: {
    /* some option here */
  },
  // ...
})

test(
  'asdf',
  withBrowser({
    // overrides to global configuration (along with other options to withBrowser like device emulation)
  }, async () => {
    // test here
  }),
)

[gerardo-rodriguez]

I left a few questions, otherwise, looks good to me. Quite the PR! 😅