Migrated the Website service and library targets to use Persistence package with PostgreSQL instead.

Services/Website/Sources/App/Extensions/ConfigReader+Properties.swift

@@ -59,7 +59,7 @@ package extension ConfigReader {
 
     /// The persistence backend the service runs against, derived from the `database.*` keys.
     ///
-    /// When `database.driver` selects MySQL, the connection parameters are assembled from the `database.host`, `database.port`,
+    /// When `database.driver` selects PostgreSQL, the connection parameters are assembled from the `database.host`, `database.port`,
     /// `database.name`, `database.username`, `database.password` (empty when unset), `database.tls`, and
     /// `database.pool.maxPerEventLoop` keys. Any other driver value falls back to the in-memory database.
     var driver: Driver {
@@ -67,8 +67,8 @@ package extension ConfigReader {
             forKey: .Database.driver,
             default: .Database.driver
         ) {
-        case .Database.driverMySQL:
-            return .mysql(
+        case .Database.driverPostgres:
+            return .postgres(
                 .init(
                     host: string(
                         forKey: .Database.host,
@@ -199,7 +199,7 @@ private extension ConfigReader {
 
     // MARK: Properties
 
-    /// The TLS posture for the MySQL connection, mapped from the `database.tls` key: `off` and `require` map to their postures, and any
+    /// The TLS posture for the PostgreSQL connection, mapped from the `database.tls` key: `off` and `require` map to their postures, and any
     /// other value falls back to `prefer`.
     var tls: TLS {
         switch string(