feat: add instanceToPlainAsync method to handle promise values

[tafm]

Description

Add a new async instanceToPlain method that handles promise values, it uses the original instanceToPain, check recursively all properties, if some propertie is instance of Promise it adds the promise to a tracking list, after all promises resolved the values also are resolved

Checklist

• the pull request title describes what this PR does (not a vague title like Update index.md)
• the pull request targets the default branch of the repository (develop)
• the code follows the established code style of the repository
  • npm run prettier:check passes
  • npm run lint:check passes
• tests are added for the changes I made (if any source code was modified)
• documentation added or updated
• I have run the project locally and verified that there are no errors

Fixes

fixes #549