In your plugin's .pkgmeta file, add the following:

externals:
  libs/WagoAnalyticsShim:
    url: https://github.com/wagoio/WagoAnalyticsShim.git
    branch: main

And in your .toc file, add the following:

## OptionalDependencies: WagoAnalytics

libs\WagoAnalyticsShim\Shim.lua