fix: fix issues with https-agent-proxy for cli and openapi-core packages

[malis42]

What/Why/How?

Adding https-proxy-agent package to fix issues with requests when using CLI behind proxy. Create better mechanism for handling env.REDOCLY_DOMAIN usage in few modules.

Now if you need to run the CLI tool behind a proxy, you can use the HTTP_PROXY and HTTPS_PROXY environment variables to configure the proxy settings.

https-proxy-agent package was used for node-fetch requests. Now we pass agent for every fetchWithTimeout request, as well as other regular fetch request.

This is a rollback of a rollback #1458
After encountering problems with some of the packages from https-proxy-agent dependencies, we had to ignore this package for browser environment, by modyfing packages/core/package.json like so:

  "browser": {
    "https-proxy-agent": false
  },

Reference

Resolves #1404
Fixes #529
Fixes #1146
Resolves #1433

Testing

Fixed unit tests. Tested with few CLI commands: push, lint etc.

Screenshots (optional)

n/a

Has code been changed?

Yes

Check yourself

• Code is linted
• Tested with redoc/reference-docs/workflows (internal)
• All new/updated code is covered with tests

Security

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

[changeset-bot]

🦋 Changeset detected

Latest commit: 169d259

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

This PR includes changesets to release 2 packages

Name	Type
@redocly/openapi-core	Patch
@redocly/cli	Patch

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[github-actions]

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
redocly lint packages/core/src/benchmark/benches/rebilly.yaml	980.6 ± 13.7	960.0	1000.3	1.00
redocly-next lint packages/core/src/benchmark/benches/rebilly.yaml	981.0 ± 15.1	953.3	1011.1	1.00 ± 0.02

[github-actions]

Coverage report

St.❔	Category	Percentage	Covered / Total
🟡	Statements	76.95%	4468/5806
🟡	Branches	67.05%	2362/3523
🟡	Functions	70.41%	728/1034
🟡	Lines	77.17%	4204/5448

Show new covered files 🐣

St.❔	File	Statements	Branches	Functions	Lines
🟢	... / domains.ts	100%	76.92%	100%	100%

Show files with reduced coverage 🔻

St.❔	File	Statements	Branches	Functions	Lines
🟡	... / config.ts	70.32%	77.3% (+1.11% 🔼)	67.86% (-1.11% 🔻)	70%
🟡	... / index.ts	63.64% (-3.03% 🔻)	67.86% (-3.57% 🔻)	73.91% (-1.09% 🔻)	63.64% (-3.03% 🔻)
🟡	... / push.ts	73.53%	68.46%	54.55%	75.93%
🟡	... / api-client.ts	75.44% (-4.56% 🔻)	41.38% (-4.77% 🔻)	75%	74.55% (-4.62% 🔻)

Test suite run success

722 tests passing in 102 suites.

Report generated by 🧪jest coverage report action from 169d259