[Feat]: OpenTofu support #240
Description
What technology?
OpenTofu, which is now under the Cloud Native Computing Foundation, is a hard fork of Terraform. Although it fully supports Terraform file extensions such as .tf, new projects are recommended to use .tofu instead. Most Terraform features are reimplemented in OpenTofu, but OpenTofu also includes features not found in Terraform.
Why should we support this technology?
Many projects are moving from Terraform to OpenTofu, and most vendors, such as Scalr, Spacelift, env0, TerraMate, and Digger, support OpenTofu and have allocated FTEs to work on it, so in the near future, OpenTofu will dominate Terraform. I think, as a starter, supporting .tofu as a variant of .tf would suffice - OpenTofu files are still HCL v2 files.