pass GITHUB_TOKEN for cargo binstall for per-ip rate limit

[anatawa12]

In some case, cargo binstall will face API per-ip rate limit on github actions runner (due to shared ip address).

As a solution, I want install-action to have an feature to pass github.token to cargo binstall as a GITHUB_TOKEN environment variable or parameter.

https://github.com/vrc-get/vrc-get/actions/runs/9664217883/job/26658335596#step:7:1

As a workaround, we can specify env: { GITHUB_TOKEN: ${{ github.token }} }

[taiki-e]

See #556 for the previous discussion.

[simonsan]

Same problems here, whenever I work on editing/improving a workflow and need to run it more often, like every 3-5 Minutes, and make a lot of requests - this would be indeed helpful.

[NobodyXu]

cc @taiki-e maybe we should reopen the PR to pass secrets.GITHUB_TOKEN?

I also wish GitHub provide more relaxed rate limit for the read-only APIs, but I understand that they don't have that much resources to burn on.