Added Maintenance And Release Workflows

Author: jeffreylanters

.github/workflows/close-inactive-issues.yml

@@ -0,0 +1,23 @@
+name: Close Inactive Issues
+
+on:
+  schedule:
+    - cron: "30 1 * * *"
+
+jobs:
+  close-issues:
+    name: Close Issue
+
+    runs-on: ubuntu-latest
+    
+    steps:
+      - uses: actions/stale@v3
+        with:
+          days-before-issue-stale: 30
+          days-before-issue-close: 14
+          stale-issue-label: "status:stale"
+          stale-issue-message: "This issue is stale because it has been open for 30 days with no activity."
+          close-issue-message: "This issue was closed because it has been inactive for 14 days since being marked as stale."
+          days-before-pr-stale: -1
+          days-before-pr-close: -1
+          repo-token: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/create-release.yml

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+name: Create Release
+
+on:
+  push:
+    tags:
+      - "v*"
+
+jobs:
+  main:
+    name: Publish to NPM
+
+    runs-on: ubuntu-latest
+
+    environment:
+      name: Unity Package Registry
+      url: https://openupm.com
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+
+      - name: Create Release
+        id: create_release
+        uses: actions/create-release@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          tag_name: ${{ github.ref }}
+          release_name: Release ${{ github.ref }}
+          draft: false
+          prerelease: false