[feature] NOs are granted the ability to globally pause the network

Son of Odinrequested to merge
no-lock into develop

This adds the ability for node operators to globally pause the network for 1 hour (720 blocks, mimir can change this quantity of blocks). Node operators can also resume the network, pushing back the block height in which the chain resumes by 1 hour. This can only be used (pause or resume) once per churn per node.

In addition,

  • nodes does not collect slash points when the chain of the tx out is paused/halted.
  • any mimir command can be deleted via setting the value to -1
  • a new mimir command is added, allowing an admin to halt all chains (in addition to individual chains)

Related #1053 (closed)

Edited by Son of Odin

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