Overhaul VirtFusion provider: 20 resources, 30 data sources, multipage pagination

Complete rewrite of the VirtFusion Terraform provider with full API coverage:

- 20 managed resources (server, build, SSH key, user, firewall, IP blocks, etc.)
- 30 data sources (hypervisors, packages, servers, IP blocks, self-service, etc.)
- New HTTP client with proper error handling, query parameter support, and
  automatic multipage pagination via GetAllPages (fetches all pages from
  Laravel-style paginated endpoints and merges into a single response)
- Fixed type mismatches against live API: ServerData.Suspended (int→bool),
  IPBlockData.Type (string→int), PackageData json tags (primaryStorage, etc.),
  ServerData nested CPU/Settings/Resources structure, HypervisorGroupResources
  array response
- Configurable results-per-page (default 300) on all list data sources
- Migrated CI from GitHub Actions to Gitea Actions
- Updated goreleaser config, go.mod dependencies, and examples

Verified against live VirtFusion instance at cp.vps.ezscale.tech:
all data sources return correct data with full pagination support.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.gitea/workflows/ci.yaml

@@ -0,0 +1,33 @@
+name: CI
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-go@v5
+        with:
+          go-version-file: go.mod
+
+      - name: Build
+        run: go build -v ./...
+
+      - name: Lint
+        uses: golangci/golangci-lint-action@v6
+        with:
+          version: latest
+
+      - name: Test
+        run: go test -race -v ./internal/...
+
+      - name: Check go generate
+        run: |
+          go generate ./...
+          git diff --exit-code || (echo "go generate produced changes; please run 'go generate ./...' and commit" && exit 1)

.gitea/workflows/endpoint-sync.yaml

@@ -0,0 +1,22 @@
+name: Endpoint Sync Check
+
+on:
+  schedule:
+    - cron: '0 9 * * 1'
+  push:
+    paths:
+      - 'openapi.yaml'
+  workflow_dispatch:
+
+jobs:
+  check-drift:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-go@v5
+        with:
+          go-version-file: go.mod
+
+      - name: Check endpoint drift
+        run: go run ./scripts/check-endpoint-drift.go

.gitea/workflows/release.yaml

@@ -0,0 +1,49 @@
+name: Release
+
+on:
+  push:
+    tags:
+      - 'v*'
+
+permissions:
+  contents: write
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - uses: actions/setup-go@v5
+        with:
+          go-version-file: go.mod
+
+      - name: Import GPG key
+        id: import_gpg
+        uses: crazy-max/ghaction-import-gpg@v6
+        with:
+          gpg_private_key: ${{ secrets.GPG_PRIVATE_KEY }}
+          passphrase: ${{ secrets.PASSPHRASE }}
+
+      - name: Check endpoint drift
+        run: go run ./scripts/check-endpoint-drift.go
+
+      - name: Run GoReleaser
+        uses: goreleaser/goreleaser-action@v6
+        with:
+          args: release --clean
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          GPG_FINGERPRINT: ${{ steps.import_gpg.outputs.fingerprint }}
+
+      - name: Create Gitea release
+        if: success()
+        run: |
+          TAG="${GITHUB_REF#refs/tags/}"
+          curl -s -X POST \
+            -H "Authorization: token ${{ secrets.GITEA_TOKEN }}" \
+            -H "Content-Type: application/json" \
+            -d "{\"tag_name\": \"${TAG}\", \"name\": \"${TAG}\", \"body\": \"Release ${TAG} — see GitHub mirror for artifacts.\"}" \
+            "${{ github.server_url }}/api/v1/repos/${{ github.repository }}/releases"

.gitea/workflows/version-check.yaml

@@ -0,0 +1,25 @@
+name: Version Check
+
+on:
+  pull_request:
+    paths:
+      - 'main.go'
+      - 'internal/**'
+
+jobs:
+  check-version:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Check version bump
+        run: |
+          BASE_VERSION=$(git show origin/${{ github.base_ref }}:main.go | grep -oP 'version string = "\K[^"]+')
+          HEAD_VERSION=$(grep -oP 'version string = "\K[^"]+' main.go)
+          if [ "$BASE_VERSION" = "$HEAD_VERSION" ]; then
+            echo "::warning::Version in main.go has not been bumped (still ${HEAD_VERSION}). Consider updating it for this release."
+          else
+            echo "Version bumped: ${BASE_VERSION} → ${HEAD_VERSION}"
+          fi