feat: added response size to respect cli and json outputs

[DmitryAnansky]

What/Why/How?

Added response size in bytes to Respect terminal and JSON file outputs:

JSON file example:

{
  "files": {
    "small.arazzo.yaml": {
      "executedWorkflows": [
        {
          "type": "workflow",
....
          "executedSteps": [
            {
              "type": "step",
....
              "response": {
                ....
                "size": 267
              },
....
  },
....
}

Reference

Related: https://github.com/Redocly/redocly/issues/18301

Testing

Screenshots (optional)

Check yourself

• Code changed? - Tested with Redoc/Realm/Reunite (internal)
• All new/updated code is covered by tests
• New package installed? - Tested in different environments (browser/node)
• Documentation update considered

Security

• The security impact of the change has been considered
• Code follows company security practices and guidelines

[changeset-bot]

🦋 Changeset detected

Latest commit: 57f0b48

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 3 packages

Name	Type
@redocly/respect-core	Minor
@redocly/cli	Minor
@redocly/openapi-core	Minor

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

[github-actions]

Command	Mean [s]	Min [s]	Max [s]	Relative
redocly lint packages/core/src/benchmark/benches/rebilly.yaml	1.457 ± 0.032	1.418	1.507	1.01 ± 0.03
redocly-next lint packages/core/src/benchmark/benches/rebilly.yaml	1.448 ± 0.021	1.419	1.478	1.00

[tatomyr]

Left minor comments. Otherwise looks good