add pacman hook for generating documentation helptags
| Task Info (Flyspray) | |
|--------------------------|---------------------------------------------------------------------------------------|
| <small>Opened By</small> | <small>[Damien Tardy-Panis (tardypad)](https://bugs.archlinux.org/user/28889)</small> |
| <small>Task ID</small> | <small>[79707](https://bugs.archlinux.org/task/79707)</small> |
| <small>Type</small> | <small>Feature Request</small> |
| <small>Project</small> | <small>Arch Linux</small> |
| <small>Category</small> | <small>Packages: Extra</small> |
| <small>Version</small> | <small>None</small> |
| <small>OS</small> | <small>All</small> |
| <small>Opened</small> | <small>2023-09-16 10:42:38 UTC</small> |
| <small>Status</small> | <small>Assigned</small> |
| <small>Assignee</small> | <small>[Sven-Hendrik Haase (Svenstaro)](https://bugs.archlinux.org/user/4209)</small> |
| <small>Assignee</small> | <small>[Caleb Maclennan (alerque)](https://bugs.archlinux.org/user/17076)</small> |
| <small>Assignee</small> | <small>[Daniel M. Capella (polyzen)](https://bugs.archlinux.org/user/19018)</small> |
### Details
Similarly to the vim package, it would be nice to have a pacman hook to regenerate the documentation that are added when installing neovim plugins.
See https://gitlab.archlinux.org/archlinux/packaging/packages/vim/-/blob/main/vimdoc.hook and FS#51591
issue