Move roles/matrix* to roles/custom/matrix*

This paves the way for installing other roles into `roles/galaxy` using `ansible-galaxy`,
similar to how it's done in:

- https://github.com/spantaleev/gitea-docker-ansible-deploy
- https://github.com/spantaleev/nextcloud-docker-ansible-deploy

In the near future, we'll be removing a lot of the shared role code from here
and using upstream roles for it. Some of the core `matrix-*` roles have
already been extracted out into other reusable roles:

- https://github.com/devture/com.devture.ansible.role.postgres
- https://github.com/devture/com.devture.ansible.role.systemd_docker_base
- https://github.com/devture/com.devture.ansible.role.timesync
- https://github.com/devture/com.devture.ansible.role.vars_preserver
- https://github.com/devture/com.devture.ansible.role.playbook_runtime_messages
- https://github.com/devture/com.devture.ansible.role.playbook_help

We just need to migrate to those.

roles/custom/matrix-conduit/tasks/conduit/setup.yml

@@ -0,0 +1,7 @@
+---
+
+- ansible.builtin.import_tasks: "{{ role_path }}/tasks/conduit/setup_install.yml"
+  when: "matrix_conduit_enabled | bool"
+
+- ansible.builtin.import_tasks: "{{ role_path }}/tasks/conduit/setup_uninstall.yml"
+  when: "not matrix_conduit_enabled | bool"

roles/custom/matrix-conduit/tasks/conduit/setup_install.yml

@@ -0,0 +1,47 @@
+---
+- name: Ensure Conduit Docker image is pulled
+  community.docker.docker_image:
+    name: "{{ matrix_conduit_docker_image }}"
+    source: "{{ 'pull' if ansible_version.major > 2 or ansible_version.minor > 7 else omit }}"
+    force_source: "{{ matrix_conduit_docker_image_force_pull if ansible_version.major > 2 or ansible_version.minor >= 8 else omit }}"
+    force: "{{ omit if ansible_version.major > 2 or ansible_version.minor >= 8 else matrix_conduit_docker_image_force_pull }}"
+  register: result
+  retries: "{{ matrix_container_retries_count }}"
+  delay: "{{ matrix_container_retries_delay }}"
+  until: result is not failed
+
+- name: Ensure Conduit config path exists
+  ansible.builtin.file:
+    path: "{{ matrix_conduit_config_path }}"
+    state: directory
+    mode: 0750
+    owner: "{{ matrix_user_username }}"
+    group: "{{ matrix_user_groupname }}"
+
+- name: Ensure Conduit data path exists
+  ansible.builtin.file:
+    path: "{{ matrix_conduit_data_path }}"
+    state: directory
+    mode: 0770
+    owner: "{{ matrix_user_username }}"
+    group: "{{ matrix_user_groupname }}"
+
+- name: Ensure Conduit configuration installed
+  ansible.builtin.template:
+    src: "{{ role_path }}/templates/conduit/conduit.toml.j2"
+    dest: "{{ matrix_conduit_config_path }}/conduit.toml"
+    mode: 0644
+    owner: "{{ matrix_user_username }}"
+    group: "{{ matrix_user_groupname }}"
+
+- name: Ensure matrix-conduit.service installed
+  ansible.builtin.template:
+    src: "{{ role_path }}/templates/conduit/systemd/matrix-conduit.service.j2"
+    dest: "{{ matrix_systemd_path }}/matrix-conduit.service"
+    mode: 0644
+  register: matrix_conduit_systemd_service_result
+
+- name: Ensure systemd reloaded after matrix-conduit.service installation
+  ansible.builtin.systemd:
+    daemon_reload: true
+  when: "matrix_conduit_systemd_service_result.changed | bool"

roles/custom/matrix-conduit/tasks/conduit/setup_uninstall.yml

@@ -0,0 +1,30 @@
+---
+
+- name: Check existence of matrix-conduit service
+  ansible.builtin.stat:
+    path: "{{ matrix_systemd_path }}/matrix-conduit.service"
+  register: matrix_conduit_service_stat
+
+- name: Ensure matrix-conduit is stopped
+  ansible.builtin.systemd:
+    name: matrix-conduit
+    state: stopped
+    daemon_reload: true
+  register: stopping_result
+  when: "matrix_conduit_service_stat.stat.exists"
+
+- name: Ensure matrix-conduit.service doesn't exist
+  ansible.builtin.file:
+    path: "{{ matrix_systemd_path }}/matrix-conduit.service"
+    state: absent
+  when: "matrix_conduit_service_stat.stat.exists"
+
+- name: Ensure systemd reloaded after matrix-conduit.service removal
+  ansible.builtin.systemd:
+    daemon_reload: true
+  when: "matrix_conduit_service_stat.stat.exists"
+
+- name: Ensure Conduit Docker image doesn't exist
+  community.docker.docker_image:
+    name: "{{ matrix_conduit_docker_image }}"
+    state: absent

roles/custom/matrix-conduit/tasks/init.yml

@@ -0,0 +1,5 @@
+---
+
+- ansible.builtin.set_fact:
+    matrix_systemd_services_list: "{{ matrix_systemd_services_list + ['matrix-conduit.service'] }}"
+  when: matrix_conduit_enabled | bool

roles/custom/matrix-conduit/tasks/main.yml

@@ -0,0 +1,17 @@
+---
+
+- ansible.builtin.import_tasks: "{{ role_path }}/tasks/init.yml"
+  tags:
+    - always
+
+- ansible.builtin.import_tasks: "{{ role_path }}/tasks/conduit/setup.yml"
+  when: run_setup | bool
+  tags:
+    - setup-all
+    - setup-conduit
+
+- name: Mark matrix-conduit role as executed
+  ansible.builtin.set_fact:
+    matrix_conduit_role_executed: true
+  tags:
+    - always