Refactor systemctl services and categories due to alarm bugs

This commit restructures systemctl service definitions and category mappings.

Motivation: Alarm-related bugs revealed inconsistencies in service and role handling.

Preparation step: lays the groundwork for fixing the alarm issues by aligning categories, roles, and service templates.

group_vars/all/05_nginx.yml

@@ -0,0 +1,32 @@
+# Webserver Configuration
+
+# Helper 
+_nginx_www_dir:   "{{ applications | get_app_conf('svc-prx-openresty','docker.volumes.www') }}"
+_nginx_dir:       "{{ applications | get_app_conf('svc-prx-openresty','docker.volumes.nginx') }}"
+_nginx_conf_dir:  "{{ _nginx_dir }}conf.d/"
+_nginx_http_dir:  "{{ _nginx_conf_dir }}http/"
+
+## Nginx-Specific Path Configurations
+NGINX:
+  FILES:
+    CONFIGURATION:   "{{ _nginx_dir }}nginx.conf"
+  DIRECTORIES:
+    CONFIGURATION:    "{{ _nginx_conf_dir }}"               # Configuration directory
+    HTTP:
+      GLOBAL:         "{{ _nginx_http_dir }}global/"        # Contains global configurations which will be loaded into the http block
+      SERVERS:        "{{ _nginx_http_dir }}servers/"       # Contains one configuration per domain
+      MAPS:           "{{ _nginx_http_dir }}maps/"          # Contains mappings
+    STREAMS:          "{{ _nginx_conf_dir }}streams/"       # Contains streams configuration e.g. for ldaps
+    DATA:
+      WWW:            "{{ _nginx_www_dir }}"
+      WELL_KNOWN:     "/usr/share/nginx/well-known/"        # Path where well-known files are stored
+      HTML:           "{{ _nginx_www_dir }}public_html/"    # Path where the static homepage files are stored
+      FILES:          "{{ _nginx_www_dir }}public_files/"   # Path where the web accessable files are stored
+      CDN:            "{{ _nginx_www_dir }}public_cdn/"     # Contains files which will be accessable via the content delivery network
+      GLOBAL:         "{{ _nginx_www_dir }}global/"         # Directory containing files which will be globaly accessable, @Todo remove this when css migrated to CDN
+    CACHE:
+      GENERAL:        "/tmp/cache_nginx_general/"           # Directory which nginx uses to cache general data
+      IMAGE:          "/tmp/cache_nginx_image/"             # Directory which nginx uses to cache images
+  USER:               "http"                                # Default nginx user in ArchLinux
+
+# @todo It propably makes sense to distinguish between target and source mount path, so that the config files can be stored in the openresty volumes folder