Add usage data counter for network policy packet stats

What does this MR do?

This MR adds redis based usage data counter that will be used for collecting usage metrics for network policy packet stats

Current plan is to use background worker to accumulate metrics across all available environments/clusters and increment redis values atomically a single time at the end of the job. Job will be run once a week.

related to #214029 (closed)

Changelog will be added in upcoming MR

Screenshots

Does this MR meet the acceptance criteria?

Conformity

• Changelog entry
• Documentation (if required)
• Code review guidelines
• Merge request performance guidelines
• Style guides
• Database guides
• Separation of EE specific content

Availability and Testing

• Review and add/update tests for this feature/bug. Consider all test levels. See the Test Planning Process.
• Tested in all supported browsers
• Informed Infrastructure department of a default or new setting change, if applicable per definition of done

Security

If this MR contains changes to processing or storing of credentials or tokens, authorization and authentication methods and other items described in the security review guidelines:

• Label as security and @ mention @gitlab-com/gl-security/appsec
• The MR includes necessary changes to maintain consistency between UI, API, email, or other methods
• Security reports checked/validated by a reviewer from the AppSec team