move GetFileSize to database

MareSynchronosServer/MareSynchronosShared/Migrations/20221228033214_FileCacheSize.cs

@@ -0,0 +1,29 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace MareSynchronosServer.Migrations
+{
+    /// <inheritdoc />
+    public partial class FileCacheSize : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AddColumn<long>(
+                name: "size",
+                table: "file_caches",
+                type: "bigint",
+                nullable: false,
+                defaultValue: 0L);
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropColumn(
+                name: "size",
+                table: "file_caches");
+        }
+    }
+}