Implemented theme crud and basic theme loading

Moonlight.Api/Database/Migrations/20260118005634_AddedThemes.cs

@@ -0,0 +1,41 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+
+#nullable disable
+
+namespace Moonlight.Api.Database.Migrations
+{
+    /// <inheritdoc />
+    public partial class AddedThemes : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.CreateTable(
+                name: "Themes",
+                schema: "core",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "integer", nullable: false)
+                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
+                    Name = table.Column<string>(type: "character varying(30)", maxLength: 30, nullable: false),
+                    Version = table.Column<string>(type: "character varying(30)", maxLength: 30, nullable: false),
+                    Author = table.Column<string>(type: "character varying(30)", maxLength: 30, nullable: false),
+                    IsEnabled = table.Column<bool>(type: "boolean", nullable: false),
+                    CssContent = table.Column<string>(type: "character varying(20000)", maxLength: 20000, nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Themes", x => x.Id);
+                });
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropTable(
+                name: "Themes",
+                schema: "core");
+        }
+    }
+}