Search job state storage for Data Lake Preview queries

[luk-kaminski]

Description

Initial version of SearchJobState object to be stored in MongoDB.
A new service with most important CRUD methods.
A new periodical to remove and expired old/outdated jobs.
/nocl

Motivation and Context

See https://github.com/Graylog2/graylog-plugin-enterprise/issues/9312
and https://github.com/Graylog2/graylog-plugin-enterprise/issues/9312

How Has This Been Tested?

With new unit tests and manually.

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Refactoring (non-breaking change)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.