Add gh role for macOS, Windows, and Debian

roles/gh/tasks/Darwin.yaml

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+---
+- name: install homebrew package
+  homebrew:
+    name: gh
+    state: latest

roles/gh/tasks/Debian.yaml

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+---
+- set_fact:
+    arch_map:
+      aarch64: arm64
+      armv6l: armhf
+      armv7l: armhf
+      i386: i386
+      x86_64: amd64
+- set_fact:
+    arch: '{{ [ansible_architecture] | map("extract", arch_map) | first }}'
+
+- name: download apt repository key
+  become: true
+  get_url:
+    url: https://cli.github.com/packages/githubcli-archive-keyring.gpg
+    dest: /usr/share/keyrings/githubcli-archive-keyring.gpg
+    mode: 0644
+
+- name: add apt repository list
+  become: true
+  apt_repository:
+    filename: github-cli
+    repo: 'deb [arch={{arch}} signed-by=/usr/share/keyrings/githubcli-archive-keyring.gpg] https://cli.github.com/packages stable main'
+    state: present
+
+- name: install apt package
+  become: true
+  apt:
+    name: gh
+    state: latest
+    update_cache: true

roles/gh/tasks/Windows.yaml

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+---
+- name: install chocolatey package
+  win_chocolatey:
+    name: gh
+    state: latest

roles/gh/tasks/main.yaml

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+---
+- include_tasks: '{{ansible_os_family}}.yaml'