Rework client.js to support running multiple instances at once and be
managed remotely and implement the neccessary communication
infrastructure for this.
Due to circular dependencies on the implementation of this the master
branch is significantly broken after this.
Move item database, tests, endpoint definitions for /api/place,
/api/remove, /api/inventory, /api/inventoryAsObject, and the web
interface view for the storage page into the clusterioMod plugin.
Add a hashStream method to lib/hash that does the same as hashFile only
with a stream instead of a file path and implement tests for both of
these methods.
Add missing.js test files that requires any files that currently does
not have any unit tests defined for them. This should hopefully make it
so that when unit tests are added for parts of these files the coverage
will increase instead of decreasing.
Note that this does not include CLI Tools/ as those are not testable.