Add issue button w/ some button updates (#221)

In this PR, I've added a "Report an issue" button and a few more
button-related changes:
- Add "Report an issue" button
- Add icon for "Octobot's source code"
- Rename `AboutTitleRepository` to `ButtonOpenRepository`
- Rename `OpenEventInfoButton` to `ButtonOpenEventInfo` to be consistent
with other language string names
- Rename `ColorsList.cs` to `Miscellaneous.cs`
- Add public const strings in `Octobot.cs` to get repository & issues links

---------

Signed-off-by: mctaylors <cantsendmails@mctaylors.ru>

src/Commands/AboutCommandGroup.cs

@@ -33,8 +33,6 @@ public class AboutCommandGroup : CommandGroup
         ("neroduckale", new Snowflake(474943797063843851))
     };
 
-    private const string RepositoryUrl = "https://github.com/LabsDevelopment/Octobot";
-
     private readonly ICommandContext _context;
     private readonly IFeedbackService _feedback;
     private readonly GuildDataService _guildData;
@@ -101,16 +99,24 @@ public class AboutCommandGroup : CommandGroup
             .WithImageUrl("https://cdn.mctaylors.ru/octobot-banner.png")
             .Build();
 
-        var button = new ButtonComponent(
+        var repositoryButton = new ButtonComponent(
             ButtonComponentStyle.Link,
-            Messages.AboutTitleRepository,
-            URL: RepositoryUrl
+            Messages.ButtonOpenRepository,
+            new PartialEmoji(Name: "🌐"),
+            URL: Octobot.RepositoryUrl
+        );
+
+        var issuesButton = new ButtonComponent(
+            ButtonComponentStyle.Link,
+            Messages.ButtonReportIssue,
+            new PartialEmoji(Name: "⚠️"),
+            URL: Octobot.IssuesUrl
         );
 
         return await _feedback.SendContextualEmbedResultAsync(embed,
             new FeedbackMessageOptions(MessageComponents: new[]
             {
-                new ActionRowComponent(new[] { button })
+                new ActionRowComponent(new[] { repositoryButton, issuesButton })
             }), ct);
     }
 }

src/Commands/Events/ErrorLoggingPostExecutionEvent.cs

@@ -1,8 +1,11 @@
 using JetBrains.Annotations;
 using Microsoft.Extensions.Logging;
 using Octobot.Extensions;
+using Remora.Discord.API.Abstractions.Objects;
 using Remora.Discord.API.Abstractions.Rest;
+using Remora.Discord.API.Objects;
 using Remora.Discord.Commands.Contexts;
+using Remora.Discord.Commands.Feedback.Messages;
 using Remora.Discord.Commands.Feedback.Services;
 using Remora.Discord.Commands.Services;
 using Remora.Discord.Extensions.Embeds;
@@ -65,6 +68,17 @@ public class ErrorLoggingPostExecutionEvent : IPostExecutionEvent
             .WithColour(ColorsList.Red)
             .Build();
 
-        return await _feedback.SendContextualEmbedResultAsync(embed, ct: ct);
+        var issuesButton = new ButtonComponent(
+            ButtonComponentStyle.Link,
+            Messages.ButtonReportIssue,
+            new PartialEmoji(Name: "⚠️"),
+            URL: Octobot.IssuesUrl
+        );
+
+        return await _feedback.SendContextualEmbedResultAsync(embed,
+            new FeedbackMessageOptions(MessageComponents: new[]
+            {
+                new ActionRowComponent(new[] { issuesButton })
+            }), ct);
     }
 }