feat(playerbots): staggered taxi take-off for bots (#1281)

* feat(playerbots): staggered taxi take-off for bots

Adds four new configurable settings to playerbots.conf:

- AiPlayerbot.BotTaxiDelayMinMs:   Min random delay before the 1st follower bot clicks the flight-master
- AiPlayerbot.BotTaxiDelayMaxMs:   Upper bound for the overall taxi delay window – larger spreads big raids
- AiPlayerbot.BotTaxiGapMs:        Fixed gap added per group-slot so bots never take off together
- AiPlayerbot.BotTaxiGapJitterMs:  Extra small randomness added to each gap so launches don’t look robotic

These options allow server owners to fine-tune how bots queue up and take off from flight masters, making their behavior appear more natural.

Closes #1017 : Bots use Flight master nearly the same time.

* fixed build errors

Was missing a header and variable declarations.

conf/playerbots.conf.dist

@@ -18,6 +18,7 @@
 #        COMBAT
 #        CHEATS
 #        SPELLS
+#        FLIGHTPATH
 #    PLAYERBOT RNDBOT SPECIFIC SETTINGS
 #        GENERAL
 #        LEVELS
@@ -495,6 +496,28 @@ AiPlayerbot.OpenGoSpell = 6477
 #
 ###################################################################################################
 
+####################################################################################################
+# FLIGHTPATH
+#
+#
+
+# Min random delay before the 1st follower bot clicks the flight-master (ms)
+AiPlayerbot.BotTaxiDelayMinMs = 350
+
+# Upper bound for the overall taxi delay window (ms) – larger spreads big raids
+AiPlayerbot.BotTaxiDelayMaxMs = 5000
+
+# Fixed gap added per group-slot so bots never take off together (ms)
+AiPlayerbot.BotTaxiGapMs = 200
+
+# Extra small randomness added to each gap so launches don’t look robotic (ms)
+AiPlayerbot.BotTaxiGapJitterMs = 100
+
+#
+#
+#
+###################################################################################################
+
 #######################################
 #                                     #
 # PLAYERBOT RNDBOT SPECIFIC SETTINGS  #