feat(install): Support using GitHub token when fetching latest release

defaults/main.yml

@@ -3,6 +3,12 @@
 # release via GitHub API.
 adguardhome_version: "latest"
 
+# When desired version is "latest", use GITHUB_TOKEN environment variable when
+# looking up the latest release via GitHub's API. If you get rate limit errors
+# from GitHub's API, turni this on and set the GITHUB_TOKEN environment variable
+# to a Personal Access Token with "repo" and "user" scopes.
+adguardhome_use_github_token: false
+
 # User to run AdGuard Home under. Must initially be "root" if no conig file is
 # on disk. After going through the setup wizard, or manually adding a config
 # file, this can be set to something else, like "adguard" for example.

tasks/latest_version.yml

@@ -9,6 +9,7 @@
     action: latest_release
     user: AdguardTeam
     repo: Adguardhome
+    token: "{% if adguardhome_use_github_token %}{{ lookup('env', 'GITHUB_TOKEN') }}{% endif %}"
   register: adguardhome_latest_release
 
 - name: Set desired version to version of latest release