Migrate to tenv from tfswitch

[kvendingoldo]

Hi! I saw that you're using tfswitch in this repository. It's a really good tool, but it does not support OpenTofu and Terragrunt. My team designed a successor of tenv that support Terraform, Terragrunt and OpenTofu. It will be a good idea to migrate into it in due to the growing popularity of OpenTofu.
url: https://github.com/tofuutils/tenv

I'll be welcomed to help with such migration.

[shadycuz]

@kvendingoldo This repo could use some love and I have some time in the next 3 weeks to bring it up to date. Thanks for bringing this to my attention. I attempt to migrate to tenv and will message you here if I have any issues.

[kvendingoldo]

ping me if you'll have any issues :)

[shadycuz]

@kvendingoldo I opened a PR but I am having trouble with tenv. I opened an issue here tofuutils/tenv#121