add NestedForm integration

[smskin]

Resolved conflicts of PR #146

Due to the long response, I had to recreate the PR 200 (#200) to release the master branch. the master branch will be used to create a package in the packagist.

New package with fixes: https://packagist.org/packages/smskin/nova-dependency-container

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Nova Nested Form is a useful package to create related resource inline using a cool UX.
This package has some problem if it contains a DependencyContainer field.

This PR allow these 2 packages to cooperate.

NestedForm uses a custom field syntax for nested purpose (based on PHP square bracket array syntax).
This PR change standard behavior of DependencyContainer to use this syntax if it used inside of a NestedForm.
It is obviously completely retro-compatible.

It fixes these PRs
yassilah/laravel-nova-nested-form#26
yassilah/laravel-nova-nested-form#114

[smskin]

@NoahNxT, @wize-wize I think that is not correct if I accept the pull request that I created. Can you review it?

[NoahNxT]

I'm not at my laptop today, but I already tested it previously and it looked good, haven't found anything breaking. You can merge it or wait until tomorrow when I'm home to test it 1 last time.

[wize-wiz]

@wize-wize I think that is not correct if I accept the pull request that I created. Can you review it?

@NoahNxT @smskin

Currently I have no setup to test it. I haven't even looked at Nova 4, sadly I can't be of any help.

I guess it's just going to be merging a bunch of PRs that look good after some testing and cleanup/close many of the current issues/PRs and just see what the response will be. I fear some of the PR's became obsolete or the author doesn't respond/care to update the code base anymore.