## Changes
`os.Getenv(..)` is not friendly with `libs/env`. This PR makes the
relevant changes to places where we need to read user home directory.
## Tests
Mainly done in https://github.com/databricks/cli/pull/914
## Changes
- added saving profile to `~/.databrickscfg` whenever we do `databricks
auth login`.
- we either match profile by account id / canonical host or introduce
the new one from deployment name.
- fail on multiple profiles with matching accounts or workspace hosts.
- overriding `~/.databrickscfg` keeps the (valid) comments, but
reformats the file.
## Tests
<!-- How is this tested? -->
- `make test`
- `go run main.go auth login --account-id XXX --host
https://accounts.cloud.databricks.com/`
- `go run main.go auth token --account-id XXX --host
https://accounts.cloud.databricks.com/`
- `go run main.go auth login --host https://XXX.cloud.databricks.com/`
## Changes
This improves out of the box usability where a user who already
configured a `.databrickscfg` file will be able to reference the
workspace host in their `bundle.yml` and it will automatically pick up
the right profile.
## Tests
* Newly added tests pass.
* Manual testing confirms intended behavior.
---------
Co-authored-by: shreyas-goenka <88374338+shreyas-goenka@users.noreply.github.com>