feat: Initialize Zastava Webhook service with TLS and Authority authentication

- Added Program.cs to set up the web application with Serilog for logging, health check endpoints, and a placeholder admission endpoint.
- Configured Kestrel server to use TLS 1.3 and handle client certificates appropriately.
- Created StellaOps.Zastava.Webhook.csproj with necessary dependencies including Serilog and Polly.
- Documented tasks in TASKS.md for the Zastava Webhook project, outlining current work and exit criteria for each task.

deploy/helm/stellaops/templates/configmaps.yaml

@@ -0,0 +1,15 @@
+{{- $root := . -}}
+{{- range $name, $cfg := .Values.configMaps }}
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: {{ include "stellaops.fullname" (dict "root" $root "name" $name) }}
+  labels:
+    {{- include "stellaops.labels" (dict "root" $root "name" $name "svc" (dict "class" "config")) | nindent 4 }}
+data:
+{{- range $fileName, $content := $cfg.data }}
+  {{ $fileName }}: |
+{{ $content | nindent 4 }}
+{{- end }}
+---
+{{- end }}