feat(hyprland/workspace): improved styling for named special workspaces

[aaronred345]

Allows you to set icon specifically for active named special workspace.

"hyperland/workspaces": {
  "format-icons": {
    "active:<workspace name>" : " ",
  }
}

As well as targeting those workspaces in styling.

#workspaces button.special.workspace_name {}
#workspaces button.special.workspace_name.active {}