feat: deploy postgres server

postgres.tf

@@ -0,0 +1,47 @@
+resource "hcloud_volume" "postgres_data" {
+  name      = "postgres-data"
+  location  = "fsn1"
+  format    = "ext4"
+  automount = true
+  size      = 10
+}
+
+resource "hcloud_volume" "postgres_backup" {
+  name      = "postgres-backup"
+  location  = "fsn1"
+  format    = "ext4"
+  automount = true
+  size      = 10
+}
+
+module "postgres" {
+  source  = "pellepelster/solidblocks-rds-postgresql/hcloud"
+  version = "0.1.19"
+
+  data_volume   = hcloud_volume.postgres_data.id
+  backup_volume = hcloud_volume.postgres_backup.id
+
+  databases = var.postgres_databases
+
+  location = "fsn1"
+
+  name                   = "postgres"
+  postgres_major_version = "15"
+  server_type            = "cax11"
+  ssh_keys               = [data.hcloud_ssh_key.default.id]
+
+  ssl_enable              = true
+  ssl_domains             = ["pg.apricote.de"]
+  ssl_email               = "certs@apricote.de"
+  ssl_dns_provider        = "hetzner"
+  ssl_dns_provider_config = { HETZNER_API_KEY : var.hetzner_dns_token }
+}
+
+resource "hetznerdns_record" "pg_apricote_de_a" {
+  zone_id = hetznerdns_zone.apricote_de.id
+
+  name  = "pg"
+  value = module.postgres.ipv4_address
+  type  = "A"
+  ttl   = 60
+}