Fixes #30

Warning: Concurrent access to the same partition is not prevented

This should solve issues regarding concurrent access to the same partition

Closes #54

This prevents conflicts when running other software on the host.

…an their timeout (#63)

This refactors how VMs are managed to isolate the timeout and update logic.

Due to a change in GitHub Actions

Changed to make a single command working for both Linux/macOs

This would have been the source of many duplicate asyncio tasks.

The custom type did not bring any value to the codebase.

Mutating the object being iterated caused inconsistency when iterating over subscribers.

The scheduling of persistent VMs requires external services to fetch
the available system resources of the host.

Solution: Add a new HTTP endpoint on `/about/usage/system`
that exposes system resources and system properties of
the host machine.

The traceback for these exceptions did not appear anywhere.

Solution: Introduce a new option that allows developers and operators to enable
asyncio debug mode.

Add helpers to run coroutines in tasks with exception catching and logging
and helps with spotting errors in coroutines.

Fixup

Clean-up multiple warnings without affecting the behaviour.

Feature: VMs could not be persisted

The supervisor only supported on request execution of
virtual machines.

This add support for an external scheduler to send a
list of VMs that should be started and persisted.

A temporary simple HTTP authentication method is
used to authenticate the scheduler, this is planned to move
to P2P messages from Core Channel Nodes.

We still support Ubuntu 20.04 that ships with Python 3.8.

Solution: Use a different typing annotation depending on the version of Python, making it easier to ditch the simpler annotation when Python 3.8 goes out of support.

Previously, 172.0.0.0/8 range was hardcoded to be used as the pool for which to assign IP addresses out of. As this was in violation of RFC1918, this needed to change. As this meant reworking the code anyway, it was changed so the range is configurable.

The custom type did not bring any value to the codebase.