Added Bot propety for easy access to the ISelfUser to all medusa *Context types

src/Nadeko.Medusa/Context/AnyContext.cs

@@ -23,6 +23,11 @@ public abstract class AnyContext
     /// </summary>
     public abstract IUser User { get; }
     
+    /// <summary>
+    /// Bot user
+    /// </summary>
+    public abstract ISelfUser Bot { get; }
+
     /// <summary>
     /// Provides access to strings used by this medusa
     /// </summary>

src/NadekoBot/Common/Medusa/Adapters/DmContextAdapter.cs

@@ -5,9 +5,11 @@ public sealed class DmContextAdapter : DmContext
     public override IMedusaStrings Strings { get; }
     public override IDMChannel Channel { get; }
     public override IUserMessage Message { get; }
+    public override ISelfUser Bot { get; }
     public override IUser User
         => Message.Author;
     
+    
     private readonly IServiceProvider _services;
     private readonly Lazy<IEmbedBuilderService> _ebs;
     private readonly Lazy<IBotStrings> _botStrings;
@@ -26,6 +28,7 @@ public sealed class DmContextAdapter : DmContext
 
         Channel = ch;
         Message = ctx.Message;
+        Bot = ctx.Client.CurrentUser;
         
         
         _ebs = new(_services.GetRequiredService<IEmbedBuilderService>());

src/NadekoBot/Common/Medusa/Adapters/GuildContextAdapter.cs

@@ -11,6 +11,7 @@ public sealed class GuildContextAdapter : GuildContext
     public override IMedusaStrings Strings { get; }
     public override IGuild Guild { get; }
     public override ITextChannel Channel { get; }
+    public override ISelfUser Bot { get; }
     public override IUserMessage Message
         => _ctx.Message;
 
@@ -28,6 +29,7 @@ public sealed class GuildContextAdapter : GuildContext
 
         Strings = strings;
         User = (IGuildUser)ctx.User;
+        Bot = ctx.Client.CurrentUser;
 
         _services = services;
         _ebs = new(_services.GetRequiredService<IEmbedBuilderService>());