Update to Modern Oclif #2
Description
While the CLI was still in the tools repo, we were limited in the version of oclif that could be used as there was a single version of every dependency shared by every package in the repository (since we had a singular Bazel source for it) and the devtools packages required a very old version of oclif due to flipper. Now that the CLI is in its own package, we should update to a modern version of oclif. To do this we'll need to:
- Write better tests for the current cli
- Could do this within Bazel (as oclif's testing framework may not be able to handle the amount of logic we need to test in the cli) by creating a local binary target (like we have done in some other repositories) and then having dedicated test packages to run the CLI to compile content, validate content, and export XLRs
- Do the update and migration work
- Run the test suite against the changes