feat: add Supporters section to README and create sync sponsors workflow

Author: ReneWerner87

.github/FUNDING.yml

@@ -0,0 +1,18 @@
+name: Sync Sponsors
+
+# Thin wrapper around the org-level reusable workflow.
+# The reusable workflow expects a SPONSORS_TOKEN secret with read:user + read:org.
+
+on:
+  workflow_dispatch:
+  schedule:
+    - cron: '0 6 * * 1'
+
+permissions:
+  contents: write
+
+jobs:
+  sync:
+    uses: gofiber/.github/.github/workflows/sync-sponsors.yml@main
+    secrets:
+      sponsors-token: ${{ secrets.SPONSORS_TOKEN }}

.github/workflows/sync-sponsors.yml

@@ -221,3 +221,9 @@ Several benchmarks to compare Fiber with other frameworks.
 ### 👍 Contributing
 
 Contribution guidelines can be found on [CONTRIBUTING.md](https://github.com/gofiber/awesome-fiber/blob/master/CONTRIBUTING.md)
+
+## ☕ Supporters
+
+Fiber is an open-source project that runs on donations to pay the bills, e.g., our domain name, hosting, and serverless infrastructure. If you want to support Fiber, please become a [GitHub Sponsor](https://github.com/sponsors/gofiber).
+
+<!-- sponsors --><!-- sponsors -->