* new bi-directional stream for jobs
* create bidirectional job channel to send requests from the server and receive responses from the client
* fix tests
* fix lint and close bug
* fix lint
* clean up & fix close of closed channel
* add nolint:staticcheck
* remove some redundant code from the job channel PR since this one is a cleaner rewrite
* cleanup removes a pending job safely
* change proto
* rename to jobRequest
* apply feedback 1
* apply feedback 2
* fix typo
* apply feedback 3
* apply last feedback
