* Improve docs for `--lambda-dir` and `--flatten` flags

* make docs more obvious

* De-dup docs for tracing, role and layer

* Clarify that layer takes an array

* Allow  to specify if the remote envs should be kept or not

* Changed from Option<bool> to just bool for

* Format

* Clippy fixes

* Format

* Fix MacOS Intel builds.

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Co-authored-by: randy-schuett_statista <[email protected]>

* Refactor test responses to use `StatusCode` constants for clarity

* Format imports.

---------

Co-authored-by: katayama8000 <[email protected]>

Then fallback to dirs::config_dir.

Let rustup use the selected channel for the project it's in.
This way if you're using a custom channel, the toolchain will be
installed on it.

This way you can keep all settings together for your app.

This should make cross compilation easier on Windows.

That way you can use the AWS SDK to test and verify functions
with streaming responses.

This allows to run multiple function instances concurrently.
Allowing to mimic the behavior of aws lambda managed instances.

* Improvements for testing and CI.

- Use cargo nextest for testing.
- Improve integration tests caching.
- Improve CI artifact caching.

* Better formatting comments.

* Don't fail if the cache artifact service is down.

This will go back to make things slower, but GHA is failing so much that it might be better.

* Propagate target directory for metadata checks.

This ensures that when we check a project metadata we look
at any target directory set in the build flags.

* Remove shared target directory hack.

It does not work.

* Add process id to the test root directory.

So we can run tests in parallel with cargo nextest.