chore: add dist to root gitignore

[OS-pedrogustavobilro]

Plugins already have dist inside their own .gitignore, this is to prevent dist files appearing untracked after switching to a branch that doesn't have a certain plugin. A current example:

1. Have the camera plugin in main branch with build dist folder.
2. Switch to next branch where camera was removed
3. Without this PR, you'll find camera folder in untracked files, because of the dist folder that wasn't in source control therefore it was never technically removed.

With dist in root .gitignore we won't accidentally commit those files.

[jcesarmobile]

npm run build in the root no longer builds camera plugin, you have to explicitly build the plugin from the folder, which nobody should be doing anymore since it was moved to another repository, but anyway, we can merge this

[OS-pedrogustavobilro]

npm run build in the root no longer builds camera plugin, you have to explicitly build the plugin from the folder, which nobody should be doing anymore since it was moved to another repository, but anyway, we can merge this

The reason why this happens for me then is because I have built it before that was disabled. Which may happen again in the future if we start moving other plugins out of this repository.