Added API to DiscordBotCore

DiscordBotCore/API/Endpoints/HomeEndpoint.cs

@@ -0,0 +1,26 @@
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using DiscordBotCore.Interfaces.API;
+using DiscordBotCore.Others;
+using Microsoft.AspNetCore.Http;
+
+namespace DiscordBotCore.API.Endpoints;
+
+internal class HomeEndpoint : IEndpoint
+{
+    private static readonly string _HomeMessage = "Welcome to the DiscordBot API.";
+    public string Path => "/";
+    EndpointType IEndpoint.HttpMethod => EndpointType.Get;
+    public async Task<ApiResponse> HandleRequest(string? jsonText)
+    {
+        string response = _HomeMessage;
+        if (jsonText != string.Empty)
+        {
+            var json = await JsonManager.ConvertFromJson<Dictionary<string,string>>(jsonText!);
+            response += $"\n\nYou sent the following JSON:\n{string.Join("\n", json.Select(x => $"{x.Key}: {x.Value}"))}";
+        }
+        
+        return ApiResponse.From(response, true);
+    }
+}