fix: add macros to build folder

[sabhas]

Intent

• add @sasjs/core macros to build folder in postbuild step

Checks

• [ ] Code is formatted correctly (npm run lint:fix).
• [ ] All unit tests are passing (npm test).
• [ ] All sasjs-cli unit tests are passing (npm test).
• [ ] Reviewer is assigned.

[sasjsbot]

:tada: This PR is included in version 2.49.1 :tada:

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

Your semantic-release bot :package::rocket: