feat: GH actions

[ixahmedxi]

Closes #12

[ixahmedxi]

We are now at a place where we have everything to run the first workflow successfully apart from the dependency on creating Neon DB workflows to create db branches for the PRs.

For this we should use the following workflows:

1. https://github.com/marketplace/actions/neon-database-create-branch-action to create db branches for PRs
2. https://github.com/marketplace/actions/neon-database-delete-branch to delete the branch when the PR is merged/closed
3. https://github.com/marketplace/actions/neon-database-reset-branch-action maybe we can also integrate this in a way where it's manually executable when it's required to run?

Might need some help from @raoufchebri and @m-abdelwahab on this.

[github-actions]

Neon branch 🐘 : https://console.neon.tech/app/projects/billowing-snow-43087420/branches/br-quiet-rice-a22n9p9c

[github-actions]

Neon branch 🐘 : https://console.neon.tech/app/projects/billowing-snow-43087420/branches/br-quiet-rice-a22n9p9c

[github-actions]

Neon branch 🐘 : https://console.neon.tech/app/projects/billowing-snow-43087420/branches/br-quiet-rice-a22n9p9c

[imCorfitz]

lgtm