feat: add new deployment configuration for main-build.chk.mintcloud.ch with Caddy root and task commands

- Create new deployment file for main-build.chk.mintcloud.ch
- Configure ingress with custom domain and production Let's Encrypt issuer
- Set additional environment variables and task commands for build process
- Define Caddy root directory for serving static files

main-build.chk.mintcloud.ch.yaml

@@ -0,0 +1,10 @@
+kind: deployment
+ingress:
+    host: "main-build.chk.mintcloud.ch"
+    customDomain: "main.build"
+    clusterIssuerRef: letsencrypt-http-prod
+gitUrl: https://codeberg.org/Mint-System/Main.Build
+additionalEnvs:
+    BASE_URL: https://main.build
+taskCommands: install,build
+caddyRoot: public