Implement release pipeline (#9)

* Implement release pipeline

* Add main trigger, fix major versions

---------

Co-authored-by: Henrique Santos <henrique.santos@freiheit.com>

.github/workflows/release.yaml

@@ -0,0 +1,42 @@
+# Terraform Provider release workflow.
+name: Release
+
+# This GitHub action creates a release when a tag that matches the pattern
+# "v*" (e.g. v0.1.0) is created.
+on:
+  push:
+    tags:
+      - 'v*'
+    branches:
+      - main
+
+# Releases need permissions to read and write the repository contents.
+# GitHub considers creating releases and uploading assets as writing contents.
+permissions:
+  contents: write
+
+jobs:
+  goreleaser:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          # Allow goreleaser to access older tag information.
+          fetch-depth: 0
+      - uses: actions/setup-go@v4
+        with:
+          go-version-file: 'go.mod'
+          cache: true
+      - name: Import GPG key
+        uses: crazy-max/ghaction-import-gpg@v5
+        id: import_gpg
+        with:
+          gpg_private_key: ${{ secrets.GPG_PRIVATE_KEY }}
+      - name: Run GoReleaser
+        uses: goreleaser/goreleaser-action@v4
+        with:
+          args: release --clean
+        env:
+          # GitHub sets the GITHUB_TOKEN secret automatically.
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          GPG_FINGERPRINT: ${{ steps.import_gpg.outputs.fingerprint }}

terraform-registry-manifest.json

@@ -0,0 +1,8 @@
+{
+    "version": 1,
+    "metadata": {
+        "protocol_versions": [
+            "6.0"
+        ]
+    }
+}