As part of open sourcing the software product, we should consider that
loyalty points are not the best language. Switching to "credits" makes
sense from a lot of points of view.
At the same time, this change allows an achitectural change towards
slots. Slots allow daemon resources to get booked based on the HW ratio
configured in the daemon config.
Introduces new environment variable to set public endpoint of the brain
refactor redirect validation to db module
validating pubsub node on all vm
fixed some vm tests
implement public IP handling
Add pub_sub_node field to vm_node table in SQL schema
Refactor BRAIN_GRPC_ADDR to use LazyLock for dynamic IP assignment
Implement current_brain_endpoint function to retrieve public IP
fix authentication and refund on delete vm
refactor app daemon register to get delete app req
db function for delete app
sample environment variable
extensive tests for delete app and vm
refactor test utilities
minimum locking balance on deployment
locking balance on app deployment
refunding locked nano while error on daemon
returning appropreate error on app deployment
fixed some typos on logging
new timeout constants for daemon respose
minor change in schema and proto
extensive tests on app deployments
fixed some vm tests
