Rename and refactor the types passed over the API to be based on an
entity that's either living or a tombstone. A living entity has a
deleted property that's either undefined or false, while a tombstone
has a deleted property set to true. All entities have a numeric id
and an updatedAt timestamp.
To sync entities, an array of replacements are passed around. Living
entities are replaced with tombstones when they're deleted. And
tombstones are replaced with living entities when restored.
The EventCard logic assume interestedIds not being present means the
account can't set events as interested. Fix this logic by checking if
the account is valid instead and always have interestedIds present on
the account store.
An account refers to the user the active session is logged in as. As
such it doesn't make sense outside of the /auth API paths that deals
with the current authenticated user. Move /api/account to
/api/auth/account to reflect this.
Replace the convoluted useAccountSession composable with a pinia store
that in addition allows for the consolidation of all session related
functions to grouped into one module.
