refactor: properly rename connections-related tables; top-level namespaces

Database/Entities/ConnectionsCard.cs

@@ -0,0 +1,29 @@
+namespace ConnectionsAPI.Database.Entities;
+
+public class ConnectionsCard
+{
+    /// <summary>
+    /// Primary key of the entity
+    /// </summary>
+    public int Id { get; set; }
+
+    /// <summary>
+    /// The contents of this card (the word)
+    /// </summary>
+    public string Content { get; set; } = string.Empty;
+
+    /// <summary>
+    /// The initial position of this card on the grid
+    /// </summary>
+    public int Position { get; set; }
+
+    /// <summary>
+    /// The ID of the associated Connections category
+    /// </summary>
+    public int ConnectionsCategoryId { get; set; }
+
+    /// <summary>
+    /// The associated category instance
+    /// </summary>
+    public virtual ConnectionsCategory? Category { get; set; }
+}