Add search token configuration to AuditLogFilter

What does this MR do?

Allows the consumer of AuditLogFilter to specify which audit filter tokens should be enabled for #217777 (closed).

Currently the AuditLogFilter supports three types of tokens for Admin audit logs. In #217781 (closed) and #217782 (closed) we plan to use the AuditLogFilter for both Group and Project audit event pages. However these pages should only display some of the tokens available in Admin logs:

• Admin: Group, User, Project
• Group: User, Project
• Project: User

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