Add diffs computed field to Quest GraphQL type

[KCarretto]

This PR extends the Quest GraphQL type to add a new diffs computed field.
It aggregates Tasks associated with a Quest that have the same output and error into bundles.

Example GraphQL response:

{
  "quests": [
    {
      "diffs": [
        { "ids": [1, 2, 3], "output": "A", "error": "" },
        { "ids": [4, 5, 6], "output": "B", "error": null },
        { "ids": [7, 8, 9], "output": "A", "error": "also this happened" },
        { "ids": [10, 11, 12], "output": null, "error": "I failed entirely" },
        { "ids": [13, 14, 15], "output": null, "error": null }
      ]
    }
  ]
}

New GraphQL types:

type TaskDiff {
    ids: [ID!]!
    output: String
    error: String
}

extend type Quest {
    diffs: [TaskDiff!]! @goField(forceResolver: true)
}

Testing included using the .yml test data framework. Output order is guaranteed deterministic by sorting output and error values.

---

PR created automatically by Jules for task 10100399020243042076 started by @KCarretto

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[github-actions]

Summary

Tests 📝	Passed ✅	Failed ❌	Skipped ⏭️	Other ❓	Flaky 🍂	Duration ⏱️
2841    ±0	2841    ±0	0    ±0	0    ±0	0    ±0	0    ±0	1ms    ±0

Previous Results

Build 🏗️	Result 🧪	Tests 📝	Passed ✅	Failed ❌	Skipped ⏭️	Other ❓	Flaky 🍂	Duration ⏱️
#1884	✅	2841	2841	0	0	0	0	41.3s

Insights

Average Tests per Run	Total Flaky Tests	Total Failed	Slowest Test (p95)
2841	0	0	5.6s

Test Changes

0 test added, 0 removed

Slowest Tests

Test 📝	Results 📊	Duration (avg) ⏱️	Duration (p95) ⏱️
TestDockerExecutor_Build_ContextCancellation	1	5.6s	5.6s
eldritch-libsys: std::dll_inject_impl::tests::test_dll_inject_simple	1	5.2s	5.2s
TestInteractiveShell	1	5.0s	5.0s
TestOtherStreamOutput	1	5.0s	5.0s
imix::bin/imix: tests::task_tests::test_task_eprint_behavior	3	3.0s	3.0s
imix::bin/imix: tests::task_tests::test_task_eprint_behavior	3	3.0s	3.0s
imix::bin/imix: tests::task_tests::test_task_eprint_behavior	3	3.0s	3.0s
imix::bin/imix: tests::task_tests::test_task_streaming_error	3	3.0s	3.0s
imix::bin/imix: tests::task_tests::test_task_streaming_error	3	3.0s	3.0s
imix::bin/imix: tests::task_tests::test_task_streaming_error	3	3.0s	3.0s

_{🎉 No failed tests in this run. | 🍂 No flaky tests in this run.}

Github Test Reporter by CTRF 💚

🔄 This comment has been updated