The Milestone Commit (#48)

mctaylors:
- updated readme 7 times (and only adding new logo from /about)
-
[removed](aeeb3d4399)
bot footer from created event embed on the second try
-
[changed](4b9b91d9e4)
cdn from discord to upload.systems

Octol1ttle:
- Guild settings code has been overhauled. Instead of instances of a
`GuildConfiguration` class being (de-)serialized when used with listing
and setting options provided by reflection, there are now multiple
`Option` classes responsible for the type of option they are storing.
The classes support getting a value, validating and setting values with
Results, and getting a user-friendly representation of these values.
This makes use of polymorphism, providing clean and easier to use and
refactor code.
- Gateway event responders have been split into their own separate
files, which should make it easier to find and modify responders when
needed.
- Warning suppressions regarding unused and never instantiated classes
have been replaced by `[ImplicitUse]` annotations provided by
`JetBrains.Annotations`. This avoids hiding real issues and provides a
better way to suppress false warnings while being explicit.
- It is no longer possible to execute some slash commands if they are
run without the correct permissions
- Dependencies are now more explicitly defined

neroduckale:
 - Made easter eggs case-insensitive

---------

Signed-off-by: Macintosh II <95250141+mctaylors@users.noreply.github.com>
Signed-off-by: Octol1ttle <l1ttleofficial@outlook.com>
Co-authored-by: Octol1ttle <l1ttleofficial@outlook.com>
Co-authored-by: nrdk <neroduck@vk.com>

src/Responders/MessageReceivedResponder.cs

@@ -0,0 +1,34 @@
+using JetBrains.Annotations;
+using Remora.Discord.API.Abstractions.Gateway.Events;
+using Remora.Discord.API.Abstractions.Rest;
+using Remora.Discord.Gateway.Responders;
+using Remora.Rest.Core;
+using Remora.Results;
+
+namespace Boyfriend.Responders;
+
+/// <summary>
+///     Handles sending replies to easter egg messages.
+/// </summary>
+[UsedImplicitly]
+public class MessageCreateResponder : IResponder<IMessageCreate> {
+    private readonly IDiscordRestChannelAPI _channelApi;
+
+    public MessageCreateResponder(IDiscordRestChannelAPI channelApi) {
+        _channelApi = channelApi;
+    }
+
+    public Task<Result> RespondAsync(IMessageCreate gatewayEvent, CancellationToken ct = default) {
+        _ = _channelApi.CreateMessageAsync(
+            gatewayEvent.ChannelID, ct: ct, content: gatewayEvent.Content.ToLowerInvariant() switch {
+                "whoami"  => "`nobody`",
+                "сука !!" => "`root`",
+                "воооо"   => "`removing /...`",
+                "пон" => "https://cdn.upload.systems/uploads/2LNfUSwM.jpg",
+                "++++" => "#",
+                "осу"  => "https://github.com/ppy/osu",
+                _      => default(Optional<string>)
+            });
+        return Task.FromResult(Result.FromSuccess());
+    }
+}