feat: Implement OAuth2 authentication with Microsoft, Google, and PocketId

- Added JWT configuration to appsettings.json for secure token handling.
- Updated config.json to include OAuth provider details for Microsoft, Google, and PocketId.
- Added Microsoft icon SVG for UI representation.
- Refactored app.config.ts to use a custom AuthInterceptor for managing access tokens.
- Enhanced auth route guard to handle asynchronous authentication checks.
- Created new auth models for structured request and response handling.
- Developed a callback component to manage user login states and transitions.
- Updated side-login component to support multiple OAuth providers with loading states.
- Implemented authentication service methods for handling OAuth login flows and token management.
- Added error handling and user feedback for authentication processes.

Api/Migrations/20251107172421_AddUserAuthentication.cs

@@ -0,0 +1,86 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace Api.Migrations
+{
+    /// <inheritdoc />
+    public partial class AddUserAuthentication : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.CreateTable(
+                name: "Users",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "int", nullable: false)
+                        .Annotation("SqlServer:Identity", "1, 1"),
+                    Email = table.Column<string>(type: "nvarchar(255)", maxLength: 255, nullable: false),
+                    FirstName = table.Column<string>(type: "nvarchar(255)", maxLength: 255, nullable: true),
+                    LastName = table.Column<string>(type: "nvarchar(255)", maxLength: 255, nullable: true),
+                    ProfilePictureUrl = table.Column<string>(type: "nvarchar(500)", maxLength: 500, nullable: true),
+                    CreatedAt = table.Column<DateTime>(type: "datetime2", nullable: false),
+                    LastLoginAt = table.Column<DateTime>(type: "datetime2", nullable: true),
+                    IsActive = table.Column<bool>(type: "bit", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Users", x => x.Id);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "UserOAuthProviders",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "int", nullable: false)
+                        .Annotation("SqlServer:Identity", "1, 1"),
+                    UserId = table.Column<int>(type: "int", nullable: false),
+                    Provider = table.Column<int>(type: "int", nullable: false),
+                    ProviderId = table.Column<string>(type: "nvarchar(255)", maxLength: 255, nullable: false),
+                    ProviderEmail = table.Column<string>(type: "nvarchar(255)", maxLength: 255, nullable: true),
+                    ProviderName = table.Column<string>(type: "nvarchar(255)", maxLength: 255, nullable: true),
+                    CreatedAt = table.Column<DateTime>(type: "datetime2", nullable: false),
+                    LastUsedAt = table.Column<DateTime>(type: "datetime2", nullable: true)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_UserOAuthProviders", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_UserOAuthProviders_Users_UserId",
+                        column: x => x.UserId,
+                        principalTable: "Users",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_UserOAuthProviders_Provider_ProviderId",
+                table: "UserOAuthProviders",
+                columns: new[] { "Provider", "ProviderId" },
+                unique: true);
+
+            migrationBuilder.CreateIndex(
+                name: "IX_UserOAuthProviders_UserId",
+                table: "UserOAuthProviders",
+                column: "UserId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_Users_Email",
+                table: "Users",
+                column: "Email",
+                unique: true);
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropTable(
+                name: "UserOAuthProviders");
+
+            migrationBuilder.DropTable(
+                name: "Users");
+        }
+    }
+}