Admin runner list to use filtered_search_utils.js

We have several opportunities for code reuse on the implementation of the runner filtered search.

The following discussions from !62018 (merged) should be addressed:

@mlunoe Source: !62018 (diffs, comment 581851695)

Yes, there seems to be some overlap here. I've tried to map your implementations with what is available vue_shared/components/filtered_search_bar/filtered_search_utils.js. You can see an example usage of these in code_review_analytics/components/filter_bar.vue.
@mlunoe started a discussion:

Suggestion (beyond scope of this MR): I believe filterToQueryObject does something similar returning an object with the filterName as key and value(s) as value.
@mlunoe started a discussion:

Suggestion (beyond scope of this MR): I believe processFilters does something similar to this gathering filters by type and providing operator and value. This can be used in combination with filterToQueryObject.
@mlunoe started a discussion:

Suggestion (beyond scope of this MR): This seems similar to urlQueryToFilter turning the URL query into a filter object
@mlunoe started a discussion:

Suggestion (beyond scope of this MR): We can use url_sync to sync the query to the URL
@mlunoe started a discussion:

Suggestion (beyond scope of this MR): I believe sort could be handled as a special case of the regular filters by adding an option for default value in the utils or falling back to the default value if the filter value is empty
@mlunoe started a discussion:

Suggestion (beyond scope of this MR): Note that url_sync handles this for us as well

Edited May 21, 2021 by Miguel Rincon