Network Getting started docs (#36337)

* first draft of getting started guide

docs/docsite/rst/network/getting_started/sample_files/first_playbook.yml

@@ -0,0 +1,14 @@
+---
+
+- name: Network Getting Started First Playbook
+  connection: network_cli
+  hosts: all
+  tasks:
+
+    - name: Get config for VyOS devices
+      vyos_facts:
+        gather_subset: all
+
+    - name: Display the config
+      debug:
+        msg: "The hostname is {{ ansible_net_hostname }} and the OS is {{ ansible_net_version }}"

docs/docsite/rst/network/getting_started/sample_files/first_playbook_ext.yml

@@ -0,0 +1,28 @@
+---
+
+- name: Network Getting Started First Playbook Extended
+  connection: network_cli
+  hosts: all
+  tasks:
+
+    - name: Get config for VyOS devices
+      vyos_facts:
+        gather_subset: all
+
+    - name: Display the config
+      debug:
+        msg: "The hostname is {{ ansible_net_hostname }} and the OS is {{ ansible_net_version }}"
+
+    - name: Update the hostname
+      vyos_config:
+        backup: yes
+        lines:
+          - set system host-name vyos-changed
+
+    - name: Get changed config for VyOS devices
+      vyos_facts:
+        gather_subset: all
+
+    - name: Display the changed config
+      debug:
+        msg: "The hostname is {{ ansible_net_hostname }} and the OS is {{ ansible_net_version }}"