Adding Entity guides, flowcharts, better sample system. (#2054)

* initial

* Interaction glossary entry

* Sharded Interaction sample

* Renames into solution

* Debugging samples

* Modify target location for webhookclient

* Finalizing docs work, resolving docfx errors.

* Adding threaduser to user chart

* Add branch info to readme.

* Edits to user chart

* Resolve format for glossary entries

* Patch sln target

* Issue with file naming fixed

* Patch 1/x for builds

* Appending suggestions

samples/WebhookClient/Program.cs

@@ -0,0 +1,34 @@
+using Discord;
+using Discord.Webhook;
+using System.Threading.Tasks;
+
+namespace WebHookClient
+{
+    // This is a minimal example of using Discord.Net's Webhook Client
+    // Webhooks are send-only components of Discord that allow you to make a POST request
+    // To a channel specific URL to send a message to that channel.
+    class Program
+    {
+        static void Main(string[] args)
+            => new Program().MainAsync().GetAwaiter().GetResult();
+
+        public async Task MainAsync()
+        {
+            // The webhook url follows the format https://discord.com/api/webhooks/{id}/{token}
+            // Because anyone with the webhook URL can use your webhook
+            // you should NOT hard code the URL or ID + token into your application.
+            using (var client = new DiscordWebhookClient("https://discord.com/api/webhooks/123/abc123"))
+            {
+                var embed = new EmbedBuilder
+                {
+                    Title = "Test Embed",
+                    Description = "Test Description"
+                };
+
+                // Webhooks are able to send multiple embeds per message
+                // As such, your embeds must be passed as a collection.
+                await client.SendMessageAsync(text: "Send a message to this webhook!", embeds: new[] { embed.Build() });
+            }
+        }
+    }
+}

samples/WebhookClient/_WebhookClient.csproj

@@ -0,0 +1,13 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net5.0</TargetFramework>
+    <RootNamespace>WebHookClient</RootNamespace>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\src\Discord.Net.Webhook\Discord.Net.Webhook.csproj" />
+  </ItemGroup>
+
+</Project>