#247

Fixes #214

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Co-authored-by: graphite-app[bot] <96075541+graphite-app[bot]@users.noreply.github.com>

Fixes #207

Fixes https://github.com/dyad-sh/dyad/issues/215

I was over-eager in https://github.com/dyad-sh/dyad/pull/200 and removed
copyDirectoryRecursive which is actually needed to copy the scaffold
out.

Fixes #89

This is more important now that import app is available and not every
git repo will be initialized with `main` as the default branch. This
handles the other common case which is the `master` branch.

Some dev servers like next.js use Gzip which breaks our content
injection so we avoid getting gzipped response when we need to do the
shim injection.

Fixes #163

Whenever Dyad does a commit from a proposal, it will automatically amend
the commit with outside changes (e.g. made outside of Dyad).

This helps avoid a lot of user confusion, e.g.
https://github.com/dyad-sh/dyad/issues/187

https://www.reddit.com/r/dyadbuilders/comments/1kjysc0/error_pushing_images/

Edge cases:
If a user adds a file outside of Dyad, and then they hit retry, it will
revert these outside changes, but it's still technically in the version
history, so I think it's OK. This should also be a pretty unusual
situation.

Fixes #164 
Fixes #187

Fixes #186, #168.

things to test:

- [x] allow real URL to open in new window
- [x] packaging in electron?
- [ ] does it work on windows?
- [x] make sure it works with older apps
- [x] what about cache / reuse? - maybe use a bigger range of ports??