add release drafter workflows

.github/release-drafter.yml

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+_extends: jellyfin-meta-plugins
+
+template: |
+  <!-- Optional: add a release summary here -->
+  [Plugin build can be downloaded here](https://repo.jellyfin.org/releases/plugin/playback-reporting/playback-reporting_$NEXT_MAJOR_VERSION.0.0.0.zip).
+
+  ## :sparkles: What's New
+
+  $CHANGES

.github/workflows/create-github-release.yml

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+name: Publish Drafted GitHub Release
+
+on:
+  push:
+    tags: [ 'v*' ]
+
+jobs:
+  publish_release_draft:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Get version from GITHUB_REF
+        id: get-version
+        run: echo "::set-output name=version::${GITHUB_REF/refs\/tags\//}"
+
+      - name: Publish release on GitHub
+        uses: test-room-7/action-publish-release-drafts@v0
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          tag-name: ${{ steps.get-version.outputs.version }}

.github/workflows/update-release-draft.yml

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+# Automates creation of Release Drafts using Release Drafter
+name: Update Release Draft
+
+on:
+  push:
+    branches:
+      - master
+
+jobs:
+  update_release_draft:
+    runs-on: ubuntu-latest
+    steps:
+      # Drafts your next Release notes as Pull Requests are merged into "master"
+      - uses: release-drafter/release-drafter@v5.14.0
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}