i-1 Introduces an Ansible playbook for linux-container with SSH access

# Issue

This PR implements the following [issue](the-liberated-edge/test-linux-containers#1).

# Acceptance criteria

- [x] A playbook for launching LXD Debian container with parameterized container name and OS version has been implemented.
- [x] The newly launched Linux containers can be connected to and administered via SSH.
- [x] The playbook has been part of an Ansible collection named theliberatededge.test_linux_containers.
- [x] Setup and getting started technical documentation has been added to README.md.

Co-authored-by: emo <esimeonov@gmail.com>
Reviewed-on: #2

extensions/molecule/default/converge.yml

@@ -0,0 +1,10 @@
+---
+- name: Converge
+  hosts: all
+  gather_facts: false
+- name: imports and executes the playbook under test
+  ansible.builtin.import_playbook: theliberatededge.test_linux_containers.launch_linux_container.yml
+  vars:
+    lte_debian_version: bookworm
+    lte_container_name: '{{ molecule_yml.platforms[0].name }}'
+    lte_container_root_pwd: '{{ lookup("ansible.builtin.env", "LTE_CONTAINER_ROOT_PWD") }}'