feat: Add SearXNG module and update infrastructure

- Introduced a new SearXNG module with configuration for Kubernetes deployment, service, and ingress.
- Updated existing Terraform app modules to include SearXNG in both dev-01 and prod-01 environments.
- Added necessary variables and secrets for SearXNG in the respective Terraform files.
- Updated Dockerfiles for llama.cpp and ollama to use latest versions.
- Enhanced security and hardening defaults in Kubernetes deployments.
- Improved documentation for Copilot instructions and Terraform workflows.

terraform/modules/apps/searxng/config.tf

@@ -0,0 +1,6 @@
+locals {
+  app_folder = var.persistent_folder
+
+  app_version = var.tag
+  app_fqdn    = var.fqdn
+}