RUM-2154 Enable resource endpoint

[maciejburda]

What and why?

Enables resource recording using resource endpoint and deprecates and disables base64 solution.
Along with this, we conducted some E2E tests and fixed some minor bugs that we spotted.

Also, there were a few updates to snapshot tests, that cover new ways of getting and rendering image data.

How?

Code was prepared in past PRs. It's mostly achieved by injecting ResourceProcessor.

Review checklist

• Feature or bugfix MUST have appropriate tests (unit, integration)
• Make sure each commit and the PR mention the Issue number or JIRA reference
• Add CHANGELOG entry for user facing changes

Custom CI job configuration (optional)

• Run unit tests for Core, RUM, Trace, Logs, CR and WVT
• Run unit tests for Session Replay
• Run integration tests
• Run smoke tests
• Run tests for tools/

[maciejburda]

To be rebased on develop after #1585 is merged and prod backend is ready

[datadog-datadog-prod-us1]

Datadog Report

Branch report: maciey/RUM-2154-enable-resource-endpoint
Commit report: 962c80e
Test service: dd-sdk-ios

❌ 1 Failed (0 Known Flaky), 2722 Passed, 0 Skipped, 6m 49.62s Wall Time
🔻 Test Sessions change in coverage: 8 decreased, 5 increased

❌ Failed Tests (1)

• testItRemovedDuplicates - ResourceProcessorTests - Details

  Expand for error

   Assertion Failure at ResourceProcessorTests.swift:80: XCTAssertEqual failed: ("2") is not equal to ("1")
  

🔻 Code Coverage Decreases vs Default Branch (8)

This report shows up to 5 code coverage decreases.

• test DatadogLogsTests tvOS 44.77% (-0.18%) - Details
• test DatadogLogsTests iOS 44.72% (-0.17%) - Details
• test DatadogCrashReportingTests tvOS 28.88% (-0.17%) - Details
• test DatadogCrashReportingTests iOS 28.84% (-0.17%) - Details
• test DatadogRUMTests iOS 79.26% (-0.15%) - Details

[maciejburda]

Awaiting for backend to be deployed.

[ncreated]

I haven't looked SR product changes, but modifications in sr-snapshots CLI and SRSnapshotTests project look fine with one remark 👌. Glad we extended it with the support to SR Resources - nice 💪.

[maxep]

Looks good 👍 I have left a couple of blocking points

[maciejburda]

Thanks for the review @maxep

I think I managed to resolve all the comments.

Also simplified threading by reusing the same queue in both processors.

[ncreated]

Looks ok 👌, I left suggestions on adding tests coverage

[maxep]

Looks great 👍

[ncreated]

🙏 Can we have this PR properly described, not leaving blank PR template? We won't know what was the scope of this change.