Merge pull request #25455 from bfredl/highlight_namespace_getters

feat(ui): allow to get the highlight namespace. closes #24390

runtime/lua/vim/_meta/api_keysets.lua

@@ -137,6 +137,9 @@ error('Cannot require a meta file')
 --- @field link? boolean
 --- @field create? boolean
 
+--- @class vim.api.keyset.get_ns
+--- @field winid? integer
+
 --- @class vim.api.keyset.highlight
 --- @field bold? boolean
 --- @field standout? boolean