feat: pda kill switch

[tracy-codes]

The PDA Kill Switch is a new action where a role can have its ability to perform any actions within the swig program simply by mutating some state in an external account.

For example:

• You are a dApp where your frontend gets compromised, and users who have active swig wallet sessions need to have their sessions stopped until mitigation
• Your dApp added a kill switch account where the external account's expected data is 0. You then update that account's data to 1, and now all swig roles that have the kill switch pointing at that account will halt.
• This halts all actions within swig.