[Feature Request]: Ability to set cell padding in query results

### Feature Description

I'd like to be able to change cell padding in the query results, like I can in Azure Data Studio (The default cell padding in VSCode is visually unappealing for me)

**VSCode** (not enough on the left or top)

**Azure Data Studio** (I personally opt for padding of 4 on all sides using the resultsGrid.cellPadding preference)

### Problem and Motivation

Need to be honest - this is an aesthetic preference. Having said that, VSCode seems pride itself on extensibility and customisation so it can be *your* workspace, and this would be part of that for me.

Thanks for the work you're doing porting Azure Data Studio features over to VSCode!

### Related Area

- [ ] Connection dialog (SQL Server | Azure browse/Fabric browse)
- [x] Query results panel
- [ ] Query editor
- [ ] Object Explorer
- [ ] Table Designer
- [ ] Schema Compare
- [ ] Schema Designer
- [ ] Local SQL Server Container provisioning
- [ ] SQL database in Fabric provisioning
- [ ] GitHub Copilot integration
- [ ] Query Plan Visualizer
- [ ] Other (please describe below)

### If you selected "Other", please describe the area

_No response_

### Confirmation

- [x] I have searched existing feature requests and couldn't find a match
- [ ] I want to help implement this feature

Start by locating the query results panel and its existing VS Code settings, then compare the requested behavior with Azure Data Studio's resultsGrid.cellPadding preference. Done means users can configure cell padding and see the setting applied consistently in query results; the issue does not name specific files or tests.

Written by the indexing model from the issue text.