Release karajo v0.7.0 (2023-05-10)

This release add login feature to Karajo using user name and password
that are pre-defined in the user.conf.

=== Breaking changes

* all: remove MaxRunning and NumRunning from JobBase

=== New features

* all: implement login page

=== Bug fixes

* all: fix possible lock on API environment

===  Enhancements

* all: changes on how the job queued using channel