Initial port of KNELServerBuild to FetchApply framework

- Created base FetchApply directory structure with classes, initializers, modules, roles, and variables
- Ported SetupNewSystem.sh functionality to modular FetchApply structure
- Created server classes: physical, virtual, librenms, database, webserver, dev-workstation
- Implemented initializers for system-setup, packages, ssh-keys, and user-configuration
- Created modules for oam, system-config, ssh-hardening, and librenms-agent
- Defined security and monitoring roles
- Copied configuration templates from KNELServerBuild
- Updated README with comprehensive FetchApply usage instructions

💘 Generated with Crush

Assisted-by: GLM-4.6 via Crush <crush@charm.land>

classes/physical/initializers

@@ -0,0 +1,14 @@
+# Initializers for physical servers
+system-setup
+packages
+ssh-keys
+user-configuration
+
+# Modules for physical servers
+oam
+system-config
+ssh-hardening
+
+# Roles for physical servers
+security
+monitoring

classes/physical/modules

@@ -0,0 +1,5 @@
+# Modules for physical servers
+oam
+system-config
+ssh-hardening
+security-hardening