✨ feat: Host a relay on Hetzner (#114)

We are hosting a [MoQ](https://quic.video) relay on a remote (bare
metal) server on Hetzner

With a lot of help from @victorpahuus

.certs/README.md

@@ -0,0 +1,24 @@
+## Usage
+1. Update the terraform.tfvars file with your domain and email.
+
+2. Run `terraform init` to initialize the Terraform working directory.
+
+3. Run `terraform plan` to see the planned changes.
+
+4. Run `terraform apply` to create the resources and obtain the certificate.
+Outputs
+
+The configuration provides two sensitive outputs:
+```bash
+certificate_pem: The full certificate chain
+private_key_pem: The private key for the certificate
+```
+
+These can be then be used in your `moq-relay` as it requires SSL/TLS certificates.
+
+## Note
+The generated certificate and key files are saved locally and ignored by git:
+```git
+.terraform
+relay_*
+```