Request: Add option to not hot-reload certain file paths

Hello! I'm trying to upgrade my site to Eleventy 2.0.0 and the only feature I'm missing from the old BrowserSync server is the ability to not inject the snippet on certain pages.

I have a little in-browser editor for my blog and I run and use locally, and when I make edits in there it saves the changes back to the Markdown file on my filesystem. When this happens, it causes a page refresh, which blows away the state of my editor. I'd love to be able to tell Eleventy to not auto-reload that route specifically when a change is detected.

I was previously able to achieve this using this method in my Eleventy config:

config.setBrowserSyncConfig({
  snippetOptions: {
    ignorePaths: 'pathToIgnore/**',
  },
})

Start by tracing the dev server's file-change handling and how it triggers page reloads or snippet injection. Compare the requested behavior with the shown BrowserSync snippetOptions.ignorePaths configuration. Done means a user can exclude a route or file path from automatic reload effects while other paths retain the current behavior.