feat: Switches workspace left and right more than one at a time.
scope: For doomemacs/doomemacs

Added optional number to switch the workspace left or right by a count

Added optional number to +workspace/switch-left(and right) to be able
to jump more than one workspace at a time because
+workspace:switch-next(and previous) jumps directly to the numbered
workspace not the next 'nth' workspace from current one. I find this
more intuitive (for vim/evil though) and easier to add here where
it (hopefully) won't mess with anybodies config rather than breaking
`+workspace:switch-next' (and previous).

FILENAME: /modules/ui/workspaces/autoload/workspace.el

• I searched the issue tracker and this hasn't been PRed before.
• My changes are not on the do-not-PR list for this project.
• My commits conform to Doom's git conventions.
• Any relevant issues or PRs have been linked to.