initial official cast support

.cast.yml

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+release:
+  github:
+    owner: teamdfir
+    repo: sift-saltstack
+manifest:
+  version: 2
+  name: sift
+  base_dir: sift
+  modes:
+    - name: server
+      state: sift.server
+      default: true
+  supported_os:
+    - id: ubuntu
+      release: 20.04
+    - id: ubuntu
+      release: 22.04

.github/workflows/releaser.yml

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+name: goreleaser
+
+on:
+  push:
+    tags:
+      - "*"
+
+jobs:
+  goreleaser:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+      - name: Set up Go
+        uses: actions/setup-go@v3
+      - name: Run GoReleaser
+        uses: goreleaser/goreleaser-action@v3
+        with:
+          distribution: goreleaser
+          version: latest
+          args: release --rm-dist
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.gitignore

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+*.key

cosign.pub

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+-----BEGIN PUBLIC KEY-----
+MFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAE7O5roaWor29sxx9Xn61+yg0C+/7u
+qn3t7PG+2q6cnDt/p6ix3HKGqV+PkKXaSfjVkWIfhnGFgrlmNueUOo7kdA==
+-----END PUBLIC KEY-----