Clear runner cache from the Settings > CI/CD page
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### Description
**Note:** This issue is an improvement of https://gitlab.com/gitlab-org/gitlab-ce/issues/41249.
Clearing the runner cache is done using a button in the pipeline list page. We can implement also a proper setting in **Settings > CI/CD** to accomplish the same task.
Currently that page is only accessible to maintainer and owner roles as is the ability to clear runner caches. We have unblocked this issue on https://gitlab.com/gitlab-org/gitlab/-/issues/19828 to deliver the cache reset functionality on the settings page.
### Design

right under the content within runner settings in ci/cd settings
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