Provision to assign Job Executor and Job Approvers for a job

[gomathi-mallow]

• Create the required tables for assigning the job approver and executors. The schema can be like the below:

job_approvers:

Column Name	Data Type
job_id	uuid
user_id	id

job_executors:

Column Name	Data Type
job_id	uuid
user_id	id

• Implement the edit action for jobs
• On the edit page of jobs the job_approvers and job_exectors can only be assigned. The other attributes cannot be updated
• The edit route needs to be enabled only for specific users (like how we can enable pg_hero routes for specific users)