nginx(role): use better naming, wording and file structure

roles/nginx/tasks/main/nginx_install.yaml

@@ -1,46 +0,0 @@
-- name: Ensure gnupg is installed
-  ansible.builtin.apt:
-    name: gnupg
-    state: present
-  become: true
-
-- name: make sure NGINX signing key is added
-  ansible.builtin.get_url:
-    url: https://nginx.org/keys/nginx_signing.key
-    dest: /etc/apt/trusted.gpg.d/nginx.asc
-    mode: "0644"
-    owner: root
-    group: root
-  become: true
-
-- name: make sure NGINX APT repository is added
-  ansible.builtin.apt_repository:
-    repo: "deb [arch=amd64 signed-by=/etc/apt/trusted.gpg.d/nginx.asc] https://nginx.org/packages/debian/ {{ ansible_distribution_release }} nginx"
-    state: present
-  become: true
-
-- name: make sure NGINX APT source repository is added
-  ansible.builtin.apt_repository:
-    repo: "deb-src [arch=amd64 signed-by=/etc/apt/trusted.gpg.d/nginx.asc] https://nginx.org/packages/debian/ {{ ansible_distribution_release }} nginx"
-    state: present
-  become: true
-
-- name: set up repository pinning to make sure nginx package gets installed from NGINX repositories
-  ansible.builtin.copy:
-    content: |
-      Package: *
-      Pin: origin nginx.org
-      Pin: release o=nginx
-      Pin-Priority: 900
-    dest: /etc/apt/preferences.d/99nginx
-    owner: root
-    group: root
-    mode: "0644"
-  become: true
-
-- name: Ensure nginx is installed
-  ansible.builtin.apt:
-    name: nginx
-    state: present
-    update_cache: true
-  become: true