feat: support for self-hosted runners at organization level

[vprashar2929]

This commit introduces the ability to register self-hosted runners using both organization and repository level registration tokens.

Fixes #10

[ocobles]

Thanks for your PR @vprashar2929 ! 🚀

This will be helpful. However, it is possible that even in an org, you may want or need to register a self-runner at repo level. Could you please add an input for that?

Something like:

repository_level:
    description: 'Set to true to use repository-level registration token'
    required: false
    default: false

And then the condition would be:

if [[ "${{ inputs.repository_level }}" == "true" ]] || [[ -z "${{ github.organization }}" ]]; then
  url="https://api.github.com/repos/${{ github.repository }}/actions/runners/registration-token"
else
  url="https://api.github.com/orgs/${{ github.organization }}/actions/runners/registration-token"
fi

[vprashar2929]

@ocobles Updated the PR 😄

[ocobles]

@vprashar2929 I realized that we will need some more changes. Where it says sudo -E -u ghrunner ./config.sh... the url must be updated too. Here's a suggestion:

register a runner-scope variable

if [[ "${{ inputs.repository_level }}" == "true" ]] || [[ -z "${{ github.organization }}" ]]; then
    runner_scope="${{ github.repository }}"
    url="https://api.github.com/repos/${{ runner_scope }}/actions/runners/registration-token"
else
    runner_scope="${{ github.organization }}"
    url="https://api.github.com/orgs/${{ runner_scope }}/actions/runners/registration-token"
fi
token=$(curl -fsSL \
    -X POST \
    -H 'accept: application/vnd.github+json' \
    -H 'authorization: Bearer ${{ inputs.github_token }}' \
    -H 'X-GitHub-Api-Version: 2022-11-28' \
    --url $url | jq -r .token)
echo "registration-token=${token}" >> $GITHUB_OUTPUT
echo "runner-scope=${runner_scope}" >> $GITHUB_OUTPUT

and in the Create Device step update the url and labels args:

sudo -E -u ghrunner ./config.sh --unattended --url https://github.com/${{ steps.get-registration-token.outputs.runner-scope }} --token ${{ steps.get-registration-token.outputs.registration-token }} --name $(hostname) --work /home/ghrunner --labels ${{ steps.get-registration-token.outputs.runner-scope }} --ephemeral

[vprashar2929]

My bad I forgot to check that. 😞 Fixed now

[ocobles]

👍🏼 looks good!