Add toggle for whispering

Heimdall.lua

@@ -41,8 +41,9 @@ if not Heimdall_Data then Heimdall_Data = {} end
 ---@field enabled boolean
 ---@field ignored table<string, boolean>
 ---@field notifyChannel string
----@field zoneNotifyFor table<string, boolean>
 ---@field ttl number
+---@field doWhisper boolean
+---@field zoneNotifyFor table<string, boolean>
 
 ---@class HeimdallMessengerConfig
 ---@field enabled boolean
@@ -60,6 +61,9 @@ if not Heimdall_Data then Heimdall_Data = {} end
 data.messenger = {
     queue = {}
 }
+data.who = {
+    ignored = {},
+}
 
 data.config = {
     spotter = {
@@ -77,6 +81,7 @@ data.config = {
         ignored = {},
         notifyChannel = "Foobar",
         ttl = 10,
+        doWhisper = true,
         zoneNotifyFor = {
             ["Orgrimmar"] = true,
             ["Thunder Bluff"] = true,