Add support for darwin arm64 when installing the plugin via Grafana CLI

[MissingRoberto]

What would you like to be added:

Add support for darwin-arm64 when installing the plugin.

Why is this needed:

If you follow the official documentation of this plugin the recommended installation path is by running grafana-cli plugins install grafana-image-renderer which doesn't work on new macbooks.

 grafana-cli --homepath $(pwd) --pluginsDir $(pwd)/data/plugins plugins install grafana-image-renderer
Deprecation warning: The standalone 'grafana-cli' program is deprecated and will be removed in the future. Please update all uses of 'grafana-cli' to 'grafana cli'
Error: ✗ [plugin.archNotFound] grafana-image-renderer is not compatible with your system architecture: darwin-arm64

The first Apple Silicon macbooks were released in 2020, which means that most people using macbooks currently will have one of those and will hit this issue if they try to install this plugin.

Official documentation: https://grafana.com/grafana/plugins/grafana-image-renderer/?tab=installation#installation

The original request for this can be found in #7 but it forces you to run Grafana using Docker and it does not support running things locally which is the recommended way for contributors and provide hot reload for quick development.

[phit]

would also like to see this for small linux systems, don't really wanna install docker just for rendering images..

[phit]

edit: this doesn't work for linux unfortunately due to puppeteer/puppeteer#7740 but could still be useful for macos arm

---

as far as I can tell there's nothing stopping you from building this locally with this minor patch of bad mapping removed

diff --git a/scripts/pkg.js b/scripts/pkg.js
index ee2ea01..ae3bbb6 100644
--- a/scripts/pkg.js
+++ b/scripts/pkg.js
@@ -17,8 +17,6 @@ const platformTransform = {
 const archTransform = {
   ia32: 'x84',
   arm: 'armv6',
-  // I only assume this is correct
-  arm64: 'armv6',
 };
 
 platform = platformTransform[platform] || platform;

then do make build_package ARCH=linux-arm64-glibc if you aren't running as root you also need to comment out this line in scripts/archive_target.sh

apt-get update && apt-get install zip -y

then you can unzip this to your grafana plugin folder e.g. /var/lib/grafana/plugins and you need to allow it to be loaded this line in the grafana.ini

allow_loading_unsigned_plugins = grafana-image-renderer

arm on macos should be very similar, not sure why these aren't being officially published