feat: change config validation order

[DmitryAnansky]

What/Why/How?

• Changes to config validation flow, linting configuration with resolved config
• Extended types mixed into other oas types

Changes in this PR also results in code changes for Project

Affected changes & tests => https://github.com/Redocly/redocly/pull/7855

Reference

Closes https://github.com/Redocly/redocly-cli/issues/1223

Testing

Screenshots (optional)

Check yourself

• [ ] Code changed? - Tested with redoc/reference-docs/workflows (internal)
• [ ] All new/updated code is covered with tests
• [ ] New package installed? - Tested in different environments (browser/node)

Security

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