feat: expose run_id in ...actions/runners/jobs endpoint (#12480)

Include `run_id` in the responses emitted by all `...actions/runners/jobs` endpoints. Helps with correlating pending jobs with other jobs and the runs they belong to.

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### Tests for Go changes

(can be removed for JavaScript changes)

- I added test coverage for Go changes...
  - [x] in their respective `*_test.go` for unit tests.
  - [x] in the `tests/integration` directory if it involves interactions with a live Forgejo server.
- I ran...
  - [x] `make pr-go` before pushing

### Tests for JavaScript changes

(can be removed for Go changes)

- I added test coverage for JavaScript changes...
  - [ ] in `web_src/js/*.test.js` if it can be unit tested.
  - [ ] in `tests/e2e/*.test.e2e.js` if it requires interactions with a live Forgejo server (see also the [developer guide for JavaScript testing](https://codeberg.org/forgejo/forgejo/src/branch/forgejo/tests/e2e/README.md#end-to-end-tests)).

### Documentation

- [ ] I created a pull request [to the documentation](https://codeberg.org/forgejo/docs) to explain to Forgejo users how to use this change.
- [x] I did not document these changes and I do not expect someone else to do it.

### Release notes

- [x] This change will be noticed by a Forgejo user or admin (feature, bug fix, performance, etc.). I suggest to include a release note for this change.
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Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/12480
Reviewed-by: Mathieu Fenniak <mfenniak@noreply.codeberg.org>

modules/structs/action.go

@@ -12,6 +12,8 @@ import (
 type ActionRunJob struct {
 	// Identifier of this job.
 	ID int64 `json:"id"`
+	// Identifier of the workflow run this job belongs to.
+	RunID int64 `json:"run_id"`
 	// How many times the job has been attempted including the current attempt.
 	Attempt int64 `json:"attempt"`
 	// Opaque identifier that uniquely identifies a single attempt of a job.