* Added getpcblock and setpcblock script commands.
* Added the docs
* Added the message 'This action is currently blocked.' when the player attempts to perform the following blocked actions
* PCBLOCK_USEITEM
* PCBLOCK_SITSTAND
* PCBLOCK_NPCCLICK
* The actions blocked are saved in state.block_action
* Click to the npc returns the WORK_IN_PROGRESS message when PCBLOCK_NPCCLICK is enabled
* Blocked action and reload script.
The player will return to his/her original state after reload script.
Thanks to @aleos89, @Lemongrass3110, @secretdataz
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