add dynamic (nmap) inventory; remove static inventory

inventory/10nmap_inventory.yml

@@ -0,0 +1,21 @@
+---
+plugin: community.general.nmap
+address: 10.10.42.0/24
+strict: False
+ipv4: yes
+ports: no
+
+cache: yes
+cache_plugin: ansible.builtin.jsonfile
+cache_connection: inventory_cache
+cache_timeout: 300
+cache_prefix: ansible_nmap_inventory_
+
+
+groups:
+  dev_nodes: "'lab-dev' in name"
+  everything_else: "'lab-dev' not in name"
+  ip_only: "'10.10.42' in name"
+
+
+...