* Managed API to handle User maintenance

* Managed Users view in application

FaKrosnoApi/Controllers/FunctionsController.cs

@@ -0,0 +1,52 @@
+using Microsoft.AspNetCore.Mvc;
+using OrdersManagementDataModel.Dtos;
+using OrdersManagementDataModel.Services;
+
+namespace FaKrosnoApi.Controllers;
+
+[ApiController]
+[Route("api/[controller]")]
+public class FunctionsController(IFunctionService service) : Controller
+{
+    [HttpGet]
+    public async Task<ActionResult<IEnumerable<FunctionDto>>> GetAll()
+    {
+        IEnumerable<FunctionDto?> functions = await service.GetAll();
+        return Ok(functions);
+    }
+
+    [HttpGet("by-id")]
+    public async Task<ActionResult<FunctionDto?>> GetById([FromQuery] Guid id)
+    {
+        FunctionDto? function = await service.GetById(id);
+        return function != null ? Ok(function) : NotFound();
+    }
+
+    [HttpGet("by-name")]
+    public async Task<ActionResult<FunctionDto?>> GetByName([FromQuery] string name)
+    {
+        FunctionDto? function = await service.GetByName(name);
+        return function != null ? Ok(function) : NotFound();
+    }
+
+    [HttpPost]
+    public async Task<ActionResult<FunctionDto>> Add([FromBody] FunctionDto function)
+    {
+        await service.Add(function);
+        return Ok(function);
+    }
+
+    [HttpPut]
+    public async Task<ActionResult<FunctionDto>> Update([FromBody] FunctionDto function)
+    {
+        await service.Update(function);
+        return Ok(function);
+    }
+
+    [HttpDelete]
+    public async Task<ActionResult<FunctionDto>> Delete([FromQuery] Guid id)
+    {
+        await service.Delete(id);
+        return Ok();
+    }
+}