Restructured the project structure back to the way it was, there's no reasonable way to split the modules

src/NadekoBot/Db/Models/StreamRoleSettings.cs

@@ -0,0 +1,68 @@
+#nullable disable
+namespace Nadeko.Bot.Db.Models;
+
+public class StreamRoleSettings : DbEntity
+{
+    public int GuildConfigId { get; set; }
+    public GuildConfig GuildConfig { get; set; }
+
+    /// <summary>
+    ///     Whether the feature is enabled in the guild.
+    /// </summary>
+    public bool Enabled { get; set; }
+
+    /// <summary>
+    ///     Id of the role to give to the users in the role 'FromRole' when they start streaming
+    /// </summary>
+    public ulong AddRoleId { get; set; }
+
+    /// <summary>
+    ///     Id of the role whose users are eligible to get the 'AddRole'
+    /// </summary>
+    public ulong FromRoleId { get; set; }
+
+    /// <summary>
+    ///     If set, feature will only apply to users who have this keyword in their streaming status.
+    /// </summary>
+    public string Keyword { get; set; }
+
+    /// <summary>
+    ///     A collection of whitelisted users' IDs. Whitelisted users don't require 'keyword' in
+    ///     order to get the stream role.
+    /// </summary>
+    public HashSet<StreamRoleWhitelistedUser> Whitelist { get; set; } = new();
+
+    /// <summary>
+    ///     A collection of blacklisted users' IDs. Blacklisted useres will never get the stream role.
+    /// </summary>
+    public HashSet<StreamRoleBlacklistedUser> Blacklist { get; set; } = new();
+}
+
+public class StreamRoleBlacklistedUser : DbEntity
+{
+    public ulong UserId { get; set; }
+    public string Username { get; set; }
+
+    public override bool Equals(object obj)
+    {
+        if (obj is not StreamRoleBlacklistedUser x)
+            return false;
+
+        return x.UserId == UserId;
+    }
+
+    public override int GetHashCode()
+        => UserId.GetHashCode();
+}
+
+public class StreamRoleWhitelistedUser : DbEntity
+{
+    public ulong UserId { get; set; }
+    public string Username { get; set; }
+
+    public override bool Equals(object obj)
+        => obj is StreamRoleWhitelistedUser x ? x.UserId == UserId : false;
+
+    public override int GetHashCode()
+        => UserId.GetHashCode();
+}