Implement support ticket system with role request and bug report functionalities

- Introduced a new support ticket system allowing users to submit bug reports and role requests.
- Implemented endpoints for creating, updating, and managing support tickets, including file attachments.
- Enhanced Telegram bot integration to handle role requests directly within the bot, enabling admins to approve or reject requests without accessing the website.
- Updated database schema to include support ticket entities and their relationships.
- Improved API documentation to reflect new support ticket endpoints and their usage.
- Added necessary localization for support ticket features in both Russian and English.

backend/src/PnvPanel.Api/Endpoints/AdminSupportEndpoints.cs

@@ -0,0 +1,79 @@
+using Microsoft.AspNetCore.Mvc;
+using PnvPanel.Api.Common;
+using PnvPanel.Application.Admin.Support;
+using PnvPanel.Application.Common.Messaging;
+using PnvPanel.Application.Common.Models;
+using PnvPanel.Application.Support;
+using PnvPanel.Application.Support.AddComment;
+using PnvPanel.Infrastructure.Identity;
+
+namespace PnvPanel.Api.Endpoints;
+
+public static class AdminSupportEndpoints
+{
+    public static IEndpointRouteBuilder MapAdminSupportEndpoints(this IEndpointRouteBuilder app)
+    {
+        var admin = app.MapGroup("/api/admin/support")
+            .WithTags("Admin.Support")
+            .RequireAuthorization(policy => policy.RequireRole(RoleNames.Admin));
+
+        admin.MapGet("/tickets", ListTickets).Produces<PagedList<TicketSummaryDto>>();
+        admin.MapGet("/tickets/{id:guid}", GetTicket).Produces<TicketDetailDto>();
+        admin.MapPost("/tickets/{id:guid}/comments", AddComment).DisableAntiforgery().Produces<TicketCommentDto>();
+        admin.MapPost("/tickets/{id:guid}/resolve", Resolve).Produces(StatusCodes.Status204NoContent);
+        admin.MapPost("/tickets/{id:guid}/close", Close).Produces(StatusCodes.Status204NoContent);
+        admin.MapPost("/tickets/{id:guid}/approve", ApproveRoleRequest).Produces(StatusCodes.Status204NoContent);
+        admin.MapPost("/tickets/{id:guid}/reject", RejectRoleRequest).Produces(StatusCodes.Status204NoContent);
+
+        return app;
+    }
+
+    private static async Task<IResult> ListTickets(
+        [AsParameters] ListTicketsRequest request, ISender sender, CancellationToken cancellationToken)
+    {
+        var query = new ListAllTicketsQuery(request.Type, request.Status, request.Page, request.PageSize);
+        var result = await sender.Send(query, cancellationToken);
+        return result.ToHttpResult();
+    }
+
+    private static async Task<IResult> GetTicket(Guid id, ISender sender, CancellationToken cancellationToken)
+    {
+        var result = await sender.Send(new GetTicketAdminQuery(id), cancellationToken);
+        return result.ToHttpResult();
+    }
+
+    private static async Task<IResult> AddComment(
+        Guid id, [FromForm] string body, IFormFileCollection? files, ISender sender, CancellationToken cancellationToken)
+    {
+        var command = new AddTicketCommentCommand(id, body, SupportEndpoints.ToUploads(files));
+        var result = await sender.Send(command, cancellationToken);
+        return result.ToHttpResult();
+    }
+
+    private static async Task<IResult> Resolve(Guid id, ISender sender, CancellationToken cancellationToken)
+    {
+        var result = await sender.Send(new ResolveTicketCommand(id), cancellationToken);
+        return result.ToHttpResult();
+    }
+
+    private static async Task<IResult> Close(Guid id, ISender sender, CancellationToken cancellationToken)
+    {
+        var result = await sender.Send(new CloseTicketCommand(id), cancellationToken);
+        return result.ToHttpResult();
+    }
+
+    private static async Task<IResult> ApproveRoleRequest(Guid id, ISender sender, CancellationToken cancellationToken)
+    {
+        var result = await sender.Send(new ApproveRoleRequestCommand(id), cancellationToken);
+        return result.ToHttpResult();
+    }
+
+    private static async Task<IResult> RejectRoleRequest(
+        Guid id, RejectRoleRequestBody body, ISender sender, CancellationToken cancellationToken)
+    {
+        var result = await sender.Send(new RejectRoleRequestCommand(id, body.Reason), cancellationToken);
+        return result.ToHttpResult();
+    }
+}
+
+public sealed record RejectRoleRequestBody(string? Reason);