feat(Fundamentals): add fundamentals service

FinlyticFundamentals/Entities/ForwardEstimateEntity.cs

@@ -0,0 +1,26 @@
+using System;
+using System.ComponentModel.DataAnnotations;
+using System.Text.Json.Serialization;
+
+namespace FinlyticFundamentals.Entities;
+
+/// <summary>
+/// Relational table for analyst consensus revenue and EPS forecasts.
+/// </summary>
+public class ForwardEstimateEntity
+{
+    [Key]
+    public Guid Id { get; set; } = Guid.NewGuid();
+
+    [Required]
+    public string Isin { get; set; } = string.Empty;
+
+    [JsonIgnore]
+    public AssetFundamentalsEntity? AssetFundamentals { get; set; }
+
+    [Required]
+    public string Period { get; set; } = string.Empty; // "CurrentQuarter", "NextQuarter", "CurrentYear", "NextYear"
+    public decimal? ExpectedRevenue { get; set; }
+    public decimal? ExpectedEps { get; set; }
+    public decimal? ExpectedGrowthRate { get; set; }
+}