Configure release-please

[tobiasdiez]

https://github.com/google-github-actions/release-please-action

Todo:

• Create PAT to run checks on created PRs

@trevor-scheer I cannot create a fine-grained PAT for this repo. Under https://github.com/settings/personal-access-tokens/new, I cannot select the "apollo-server-integrations" as the resource owner. I'm not sure if one has to be admin of the org or if the org policies prevent PATs. For the latter, could you please check https://docs.github.com/en/enterprise-cloud@latest/organizations/managing-programmatic-access-to-your-organization/setting-a-personal-access-token-policy-for-your-organization ? Thanks!