This add autocompletion for all flags and commands in the cli.
To use this you'll have to source the completions file generated by
`corso completion [bash|zsh|fish|powershell]`.
You can do that by doing the following (example for bash):
``` bash
corso completion bash > /tmp/corso_completions
source /tmp/corso_completions
```
adds the primary `debug` command to the cli as
a hidden command option. Also includes the scaffold for
a `metadata-files` command that could be used to print
out the metadata files in the backup.
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#### Does this PR need a docs update or release note?
- [x] ⛔ No
#### Type of change
- [x] 🌻 Feature
#### Test Plan
- [x] ⚡ Unit test
