feat: add global rejoin cooldown option

[SrBedrock]

No description provided.

[Copilot]

Pull Request Overview

Adds support for a global rejoin cooldown feature that prevents players from creating new clans for a configured period after leaving any clan, as opposed to the existing per-clan rejoin cooldown.

Key changes:

• Introduces global rejoin cooldown configuration option alongside existing per-clan rejoin cooldown
• Implements cooldown validation for clan creation to prevent abuse through clan hopping
• Updates PlaceholderAPI dependency to newer version

Reviewed Changes

Copilot reviewed 9 out of 9 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
wiki/how-to-setup/configuration.md	Documents the new rejoin-cooldown-global configuration option
src/main/resources/config.yml	Adds the global rejoin cooldown setting with default value false
src/main/java/net/sacredlabyrinth/phaed/simpleclans/managers/SettingsManager.java	Defines the configuration field for global rejoin cooldown
src/main/java/net/sacredlabyrinth/phaed/simpleclans/managers/ClanManager.java	Implements global cooldown logic and refactors existing rejoin methods
src/main/java/net/sacredlabyrinth/phaed/simpleclans/commands/general/GeneralCommands.java	Adds cooldown validation to clan creation command
src/main/java/net/sacredlabyrinth/phaed/simpleclans/ClanPlayer.java	Adds @NotNull annotation to getResignTimes method
src/main/resources/messages*.properties	Adds localized message for global cooldown violation
pom.xml	Updates PlaceholderAPI dependency from 2.11.3 to 2.11.6

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