feat: operator-sdk scaffold with Function and Trigger CRDs

- operator-sdk init --domain kube5s.ru
- CRD: Function, Trigger (sless.kube5s.ru)
- controllers: FunctionReconciler, TriggerReconciler (stubs)
- internal/ structure: api, storage/postgres, storage/s3, builder, config
- fix: controller-tools bumped v0.11.1→v0.14.0 (Go 1.23 compat)

config/crd/patches/webhook_in_functions.yaml

@@ -0,0 +1,16 @@
+# The following patch enables a conversion webhook for the CRD
+apiVersion: apiextensions.k8s.io/v1
+kind: CustomResourceDefinition
+metadata:
+  name: functions.sless.kube5s.ru
+spec:
+  conversion:
+    strategy: Webhook
+    webhook:
+      clientConfig:
+        service:
+          namespace: system
+          name: webhook-service
+          path: /convert
+      conversionReviewVersions:
+      - v1