Add bat role for Debian and macOS

roles/bat/tasks/Darwin.yaml

@@ -0,0 +1,5 @@
+---
+- name: install homebrew package
+  homebrew:
+    name: bat
+    state: latest

roles/bat/tasks/Debian.yaml

@@ -0,0 +1,13 @@
+---
+- name: install apt package
+  become: true
+  apt:
+    name: bat
+    state: latest
+
+- name: update bat alternative
+  become: true
+  alternatives:
+    name: bat
+    path: /usr/bin/batcat
+    link: /usr/local/bin/bat

roles/bat/tasks/main.yaml

@@ -0,0 +1,2 @@
+---
+- include_tasks: '{{ansible_os_family}}.yaml'

unix.yaml

@@ -7,6 +7,7 @@
     - role: neovim
 
     - role: ag
+    - role: bat
     - role: git
     - role: tree