docs: Add missing docstring

src/Linker.Core/ApiModels/CreateWorkspaceMembershipRequest.cs

@@ -3,11 +3,23 @@
 using Linker.Core.Models;
 using System;
 
+/// <summary>
+/// The workspace membership request.
+/// </summary>
 public sealed class CreateWorkspaceMembershipRequest
 {
+    /// <summary>
+    /// Gets or sets the workspace ID.
+    /// </summary>
     required public Guid WorkspaceId { get; set; }
 
+    /// <summary>
+    /// Gets or sets the user ID.
+    /// </summary>
     required public Guid UserId { get; set; }
 
+    /// <summary>
+    /// Gets or sets the workspace role for the user.
+    /// </summary>
     required public WorkspaceRole WorkspaceRole { get; set; }
 }

src/Linker.Core/ApiModels/UpdateWorkspaceRequest.cs

@@ -1,10 +1,22 @@
 namespace Linker.Core.ApiModels;
 
+/// <summary>
+/// The request to update workspace info.
+/// </summary>
 public sealed class UpdateWorkspaceRequest
 {
+    /// <summary>
+    /// The unique handle of the workspace.
+    /// </summary>
     required public string Handle { get; set; }
 
+    /// <summary>
+    /// Gets or sets the name of the workspace.
+    /// </summary>
     required public string Name { get; set; }
 
+    /// <summary>
+    /// Gets or sets the description of the workspace.
+    /// </summary>
     required public string Description { get; set; }
 }

src/Linker.Core/Models/WorkspaceMembership.cs

@@ -2,15 +2,33 @@
 
 using System;
 
+/// <summary>
+/// The membership record for a workspace.
+/// </summary>
 public class WorkspaceMembership
 {
+    /// <summary>
+    /// Gets or sets the workspace ID.
+    /// </summary>
     required public string WorkspaceId { get; set; }
 
+    /// <summary>
+    /// Gets or sets the user ID.
+    /// </summary>
     required public string UserId { get; set; }
 
+    /// <summary>
+    /// Gets or sets the workspace role of the user.
+    /// </summary>
     required public WorkspaceRole WorkspaceRole { get; set; }
 
+    /// <summary>
+    /// Gets or sets the date of joining.
+    /// </summary>
     required public DateTime CreatedAt { get; set; }
 
+    /// <summary>
+    /// Gets or sets the date of modification.
+    /// </summary>
     required public DateTime ModifiedAt { get; set; }
 }

src/Linker.WebApi/Mappers/WorkspaceMapperProfile.cs

@@ -4,15 +4,24 @@
 using Linker.Core.ApiModels;
 using Linker.Core.Models;
 
+/// <summary>
+/// The mapper profile for Workspace related models.
+/// </summary>
 public sealed class WorkspaceMapperProfile : Profile
 {
+    /// <summary>
+    /// Initializes a new instance of the <see cref="WorkspaceMapperProfile"/> class.
+    /// </summary>
     public WorkspaceMapperProfile()
     {
         this.ConfigureMapFromPostRequestToWorkspace();
         this.ConfigureMapFromPutRequestToWorkspace();
         this.ConfigureMapFromMembershipPostRequestToMembership();
     }
 
+    /// <summary>
+    /// Configures the mapping for <see cref="CreateWorkspaceRequest"/> to <see cref="Workspace"/>.
+    /// </summary>
     public void ConfigureMapFromPostRequestToWorkspace()
     {
         this.CreateMap<CreateWorkspaceRequest, Workspace>(MemberList.Source)
@@ -21,11 +30,17 @@ public void ConfigureMapFromPostRequestToWorkspace()
             .ForMember(dest => dest.ModifiedAt, opt => opt.MapFrom(src => DateTime.Now));
     }
 
+    /// <summary>
+    /// Configures the mapping for <see cref="UpdateWorkspaceRequest"/> to <see cref="Workspace"/>.
+    /// </summary>
     public void ConfigureMapFromPutRequestToWorkspace()
     {
         this.CreateMap<UpdateWorkspaceRequest, Workspace>(MemberList.Source);
     }
 
+    /// <summary>
+    /// Configures the mapping for <see cref="CreateWorkspaceMembershipRequest"/> to <see cref="WorkspaceMembership"/>.
+    /// </summary>
     public void ConfigureMapFromMembershipPostRequestToMembership()
     {
         this.CreateMap<CreateWorkspaceMembershipRequest, WorkspaceMembership>(MemberList.Source)