chore: move out the OS-specific roles

Signed-off-by: Matej Focko <me@mfocko.xyz>

roles/os/el/tasks/main.yml

@@ -0,0 +1,33 @@
+---
+- name: Enable EPEL
+  ansible.builtin.package:
+    name: epel-release
+    state: present
+
+- name: Enable CRB for CentOS Stream
+  community.general.ini_file:
+    path: /etc/yum.repos.d/centos.repo
+    section: crb
+    option: enabled
+    value: 1
+    create: no
+  when: ansible_distribution == "CentOS"
+
+- name: Enable CRB and Plus repositories for AlmaLinux
+  community.general.ini_file:
+    path: /etc/yum.repos.d/almalinux-{{ item }}.repo
+    section: "{{ item }}"
+    option: enabled
+    value: 1
+    create: no
+  when: ansible_distribution == "AlmaLinux"
+  loop:
+    - crb
+    - plus
+
+- name: Enable mf's Copr
+  community.general.copr:
+    name: mfocko/mfocko
+    state: enabled
+    chroot: "epel-9-{{ ansible_architecture }}"
+  become: true