stats for poems couplet counts in categories

#464

RMuseum/Migrations/20250128100350_SectionCoupletCount.cs

@@ -0,0 +1,29 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace RMuseum.Migrations
+{
+    /// <inheritdoc />
+    public partial class SectionCoupletCount : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AddColumn<int>(
+                name: "CoupletsCount",
+                table: "GanjoorPoemSections",
+                type: "int",
+                nullable: false,
+                defaultValue: 0);
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropColumn(
+                name: "CoupletsCount",
+                table: "GanjoorPoemSections");
+        }
+    }
+}

RMuseum/Migrations/RMuseumDbContextModelSnapshot.cs

@@ -1533,6 +1533,9 @@ namespace RMuseum.Migrations
                     b.Property<int>("CachedFirstCoupletIndex")
                         .HasColumnType("int");
 
+                    b.Property<int>("CoupletsCount")
+                        .HasColumnType("int");
+
                     b.Property<int?>("GanjoorMetreId")
                         .HasColumnType("int");