fix: move workflow to repo root, add working-directory for terraform

terraform/.gitea/workflows/terraform.yml

@@ -1,51 +0,0 @@
-name: Terraform
-
-on:
-  push:
-    branches: [main]
-  pull_request:
-    branches: [main]
-
-env:
-  TF_VAR_netbird_token: ${{ secrets.NETBIRD_TOKEN }}
-
-jobs:
-  terraform:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v4
-
-      - name: Setup Terraform
-        uses: hashicorp/setup-terraform@v3
-        with:
-          terraform_version: 1.7.0
-
-      - name: Terraform Init
-        run: terraform init
-
-      - name: Terraform Format Check
-        run: terraform fmt -check
-        continue-on-error: true
-
-      - name: Terraform Validate
-        run: terraform validate
-
-      - name: Terraform Plan
-        if: github.event_name == 'pull_request'
-        run: terraform plan -no-color
-
-      - name: Terraform Apply
-        if: github.ref == 'refs/heads/main' && github.event_name == 'push'
-        run: terraform apply -auto-approve
-
-      - name: Commit state changes
-        if: github.ref == 'refs/heads/main' && github.event_name == 'push'
-        run: |
-          git config user.name "Terraform CI"
-          git config user.email "ci@localhost"
-          git add terraform.tfstate terraform.tfstate.backup 2>/dev/null || true
-          if ! git diff --staged --quiet; then
-            git commit -m "chore: update terraform state [skip ci]"
-            git push
-          fi