Add `message_for_resource_action`

[tvdeyen]

What is this pull request for?

Returns a translated message for a flash notice or json response message without assigning it to flash[:notice].

Checklist

• [x] I have followed Pull Request guidelines
• [x] I have added a detailed description into each commit message
• [x] I have added tests to cover this change

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 95.88%. Comparing base (6499cd4) to head (c9b7fde).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #2866 +/- ## ======================================= Coverage 95.88% 95.88% ======================================= Files 229 229 Lines 6216 6218 +2 ======================================= + Hits 5960 5962 +2 Misses 256 256 ```

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