feat(db-postgres): Add multiple field sort by string

[SimYunSup]

Description

Related disscusion is #2089. For 1.x PR, #3236.

I added conditional logic for multiple field sort. sort string is implemented as comma format like PR comment.

payload/packages/db-postgres/src/queries/buildQuery.ts

Lines 98 to 100 in 45b3f06

	if (orderBy.column) {
	selectFields.sort = orderBy.column
	}

I wasn't sure what this code was doing, so I opened the PR as a draft.

• I have read and understand the CONTRIBUTING.md document in this repository.

Type of change

• New feature (non-breaking change which adds functionality)

Checklist:

• I have added tests that prove my fix is effective or that my feature works
• Existing test suite passes locally with my changes
• I have made corresponding changes to the documentation

[SimYunSup]

Progress: Fix adding version. to sortPath when queryDraft has sort.

When payload v3 is released, I hope it will be fixed and merged with the reason why selectFields.sort was used. :)

[max-degterev]

any chance to get this updated/merged?

[max-degterev]

guys?

[SimYunSup]

@max-degterev I'm not working on payload at the moment, so I apologize for the slow response. It will take a while for me to get back to updating this PR to the latest commit.

[r1tsuu]

This was implemented here #8799 and will be in the next release, closing this old one, thanks for the attempt!.