List bug reports

Return your organization's bug reports, most severe first and newest first within a severity. Pass app_file_id to get the bug reports for one build.

A bug found by QualGent appears here once QualGent has reviewed it, which is also
when it appears in `bugs` on `GET /v1/missions/submissions`. Deleted bugs are not returned.

**Query parameters:**
- `app_file_id`: return only bug reports for this app build
- `status`: `open`, `in_progress`, `fixed` or `wont_fix`
- `severity`: `low`, `medium`, `high` or `critical`
- `failure_classification`: `app_bug` or `setup_issue`
- `limit` and `offset`: page through the result

**Each bug report includes:**
- `id` and `bugId`, the human-readable ID such as `BUG_014`
- `summary`, `steps` (one step per line) and `resultDetails` with `expected` and `actual`
- `status`, `severity` and `failureClassification`
- `appFileId` and `appFile`: the build the bug was found on
- `attachment`: the screenshot or recording, with a `downloadUrl` valid for one hour
- `externalTicket`: the linked GitHub, Jira or Linear ticket
- `createdAt` and `updatedAt`