Added depends_on with condition & fixed dependency reorder algorithm

[tcorzo]

This pull request adds support for unmarshal of the depends_on field with conditions. It also includes a fix for the dependency reorder algorithm. The changes allow direct import of compose files with dependency condition fields and fixes false positives regarding circular dependencies. The code has been tested with various scenarios and includes unit tests to verify the functionality.
Notes:

• Conditions are not considered when starting the containers, they're just succesfully unmarshalled.
• There are a lot of formatting changes, I can take the time to revert them in case they make the PR too annoying to read

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[tcorzo]

Omg the conditions are already implemented on unstable 🤦‍♂️ I think the circular dependencies bug is still present though, I'll check