chore(inventory): add host-specific configuration files and update production inventory for proxmox hosts

- Add individual `host_vars` YAML files for new proxmox hosts (`aya01`, `inko`, `lulu`):
  - Set SSH and Ansible connection variables, including `ansible_user`, `ansible_host`, `ansible_port`, and `ansible_ssh_private_key_file`
  - Configure `ansible_become_pass` with respective vault entries for sudo access
  - Define host-specific metadata, including hostname and IP address

- Update `production` inventory:
  - Add new `[proxmox]` group and include `aya01`, `inko`, and `lulu` for proxmox-related automation

These additions streamline Ansible's management of proxmox hosts, centralizing their configuration and enabling easier host-specific variable access for deployment and management tasks.

Signed-off-by: Tuan-Dat Tran <tuan-dat.tran@tudattr.dev>

host_vars/aya01.yml

@@ -0,0 +1,10 @@
+---
+ansible_user: "root"
+ansible_host: 192.168.20.12
+ansible_port: 22
+ansible_ssh_private_key_file: "{{ pk_path }}"
+ansible_become_pass: "{{ vault.pve.aya01.root.sudo }}"
+
+host:
+  hostname: "aya01"
+  ip: "{{ ansible_host }}"

host_vars/inko.yml

@@ -0,0 +1,10 @@
+---
+ansible_user: "root"
+ansible_host: 192.168.20.14
+ansible_port: 22
+ansible_ssh_private_key_file: "{{ pk_path }}"
+ansible_become_pass: "{{ vault.pve.inko.root.sudo }}"
+
+host:
+  hostname: "inko"
+  ip: "{{ ansible_host }}"

host_vars/lulu.yml

@@ -0,0 +1,10 @@
+---
+ansible_user: "root"
+ansible_host: 192.168.20.28
+ansible_port: 22
+ansible_ssh_private_key_file: "{{ pk_path }}"
+ansible_become_pass: "{{ vault.pve.lulu.root.sudo }}"
+
+host:
+  hostname: "lulu"
+  ip: "{{ ansible_host }}"