Add server configuration service and repo

RecNet.Infrastructure/Persistence/Migrations/20260618183916_ServerConfigs.cs

@@ -0,0 +1,33 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace RecNet.Infrastructure.Persistence.Migrations
+{
+    /// <inheritdoc />
+    public partial class ServerConfigs : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.CreateTable(
+                name: "ServerConfigs",
+                columns: table => new
+                {
+                    Key = table.Column<string>(type: "character varying(128)", maxLength: 128, nullable: false),
+                    Value = table.Column<string>(type: "jsonb", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_ServerConfigs", x => x.Key);
+                });
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropTable(
+                name: "ServerConfigs");
+        }
+    }
+}