Add Ansible playbooks for MeshCore monitoring node deployment

Roles: base (apt, tailscale, motd), meshcore_cli (pipx), meshcore_capture
(agessaman/meshcore-packet-capture + .env.local template), scripts (voltage, bandwidth).

Host vars contain per-device serial ports; group vars hold shared MQTT broker config.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

ansible/inventory.yml

@@ -0,0 +1,14 @@
+all:
+  children:
+    meshcore:
+      children:
+        zero_w:
+          hosts:
+            dm-baldock:
+              ansible_host: dm-baldock
+        zero2_w:
+          hosts:
+            dm-ashwell:
+              ansible_host: dm-ashwell
+            dm-edworth:
+              ansible_host: dm-edworth