This PR updates the `zed_extension_api` to v0.1.0 for the extensions
that live in this repo.
The changes in that version of additive, so none of the extensions need
to change their usage in order to upgrade.
Release Notes:
- N/A
This PR extracts Terraform support into an extension and removes the
built-in Terraform support from Zed.
Release Notes:
- Removed built-in support for Terraform, in favor of making it
available as
an extension. The Terraform extension will be suggested for download
when you
open a `.tf`, `.tfvars`, or `.hcl` file.
