Rebrand to Pezkuwichain Telemetry

- Rename PolkadotIcon to PezkuwiIcon
- Update pinned chains for Pezkuwichain
- Add pezkuwichain, bizinikiwi, pezkuwichain-js icons
- Update favicon with Pezkuwi branding
- Update package.json author to Dijital Kurdistan Tech Institute
- Update GitHub links to pezkuwichain/pezkuwi-telemetry
- Update backend Cargo.toml authors
- Rewrite README with Pezkuwichain documentation
- Add GitHub workflows (frontend-ci, backend-ci, docker, lock)

frontend/assets/index.html

@@ -7,7 +7,7 @@
       content="width=device-width, initial-scale=1, shrink-to-fit=no"
     />
     <meta name="theme-color" content="#000000" />
-    <title>Polkadot Telemetry</title>
+    <title>Pezkuwichain Telemetry</title>
     <script type="text/javascript" src="/tmp/env-config.js"></script>
     <style>
       body,