Feature: pizza generate codeowners config file should defualt to local path vs. local path

[jpmcb]

Suggested solution

The default experience is to use the ~/.sauced.yaml config vs. the one within the directory targeted by the CLI:

$ pizza generate codeowners /path/to/repo

If there's both a ~/.sauced.yaml and a /path/to/repo/.sauced.yaml, it'll pick the ~/.sauced.yaml file

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The default behavior should be flipped

[brandonroberts]

Closed by #158