Whisper 0.1.0: private messages between players

/pm (/w) with names, #userid, SteamIDs, @me, @aim, @random, @randomt and
@randomct, /r to reply, and /block, /blocklist, /unblock. Lines use
CS2-Tags' rank prefixes and colours: >[[M] Kalus -> me] message. Gagged
players can't send; blocks stop everyone but staff. Messages are kept in
CS2-SimpleAdmin's database while History is on (css_whisper_history).

Config.cs

@@ -0,0 +1,50 @@
+using System.Text.Json.Serialization;
+using CounterStrikeSharp.API.Core;
+
+namespace Whisper;
+
+public sealed class WhisperConfig : BasePluginConfig
+{
+    // Keep each message (sender, recipient, both teams and alive/dead, map, time) in wh_messages.
+    // css_whisper_history on|off changes it and saves this file.
+    [JsonPropertyName("History")]
+    public bool History { get; set; } = true;
+
+    // How the line is drawn: Open, then the sender's rank prefix and name, Arrow, the recipient
+    // (Me on the recipient's own line), Close, then the message. Colour tags like {Default}.
+    [JsonPropertyName("Open")]
+    public string Open { get; set; } = "{Default}>[";
+
+    [JsonPropertyName("Arrow")]
+    public string Arrow { get; set; } = "{Default}→";
+
+    [JsonPropertyName("Me")]
+    public string Me { get; set; } = "{Default}me";
+
+    [JsonPropertyName("Close")]
+    public string Close { get; set; } = "{Default}]";
+
+    // CS2-Tags' file, read for each player's rank prefix and colours.
+    [JsonPropertyName("TagsFile")]
+    public string TagsFile { get; set; } = "configs/plugins/CS2-Tags/tags.json";
+
+    [JsonPropertyName("CooldownSeconds")]
+    public double CooldownSeconds { get; set; } = 1;
+
+    [JsonPropertyName("MaxMessageLength")]
+    public int MaxMessageLength { get; set; } = 200;
+
+    [JsonPropertyName("MaxBlocks")]
+    public int MaxBlocks { get; set; } = 100;
+
+    // Who gets through blocks and can find admins hidden with css_hide.
+    [JsonPropertyName("StaffPermission")]
+    public string StaffPermission { get; set; } = "@css/generic";
+
+    // Writes kept on disk while the database is down.
+    [JsonPropertyName("SpoolMaxEntries")]
+    public int SpoolMaxEntries { get; set; } = 20000;
+
+    [JsonPropertyName("ConfigVersion")]
+    public override int Version { get; set; } = 1;
+}