CLI app export is hardcoded to check for .tofurc overrides only

[danielodievich]

When running with local .terraformrc override http://developer.hashicorp.com/terraform/cli/config/config-file and trying to run ei apps export, the override does not get picked up

It is because https://github.com/elementumltd/elementum-cli/blob/main/export/terraform.go#L120-L133 is hardcoded to check only for .tofurc https://opentofu.org/docs/cli/config/config-file/

	tofurcPath := filepath.Join(os.Getenv("HOME"), ".tofurc")
	if _, err := os.Stat(tofurcPath); err == nil {
		// .tofurc exists, check if it contains dev_overrides for elementum
		content, err := os.ReadFile(tofurcPath)
		if err == nil && containsString(string(content), "elementumltd/elementum") {
			// Dev overrides are likely active - skip init as it will fail
			// The provider binary will be found via dev_overrides
			// Remove any existing .terraform directory and lock file that might conflict
			_ = os.RemoveAll(filepath.Join(tr.WorkDir, ".terraform"))
			_ = os.Remove(filepath.Join(tr.WorkDir, ".terraform.lock.hcl"))
			fmt.Println("✓ Using provider dev_overrides (skipping init)")
			return nil
		}
	}

This needs to check for either of those two files