sysutils/nnn: Update to 4.4

Changes:
- support macOS iterm2 in plugin preview-tui (#1196)
- use selection at native command prompt with `%j` and `%J`
  - docs - https://github.com/jarun/nnn/wiki/concepts#special-variables
- scroll strings longer than columns in rename/new prompts (#1213, #279)
- batch rename symlink targets in listing mode (#1214)
- option for recursive rename in plugin .nmv (#1186)
- more frequent checks for cancellation during du (#1236)
- picker mode: enable auto-proceed
- picker mode: don't pick hovered file on <kbd>Enter</kbd> if selection exists
- picker mode: fix issue in plugin `fzopen` when used to pick files
- send file to explorer FIFO on double left click instead of opening it
- new neovim plugin [nnn.nvim](https://github.com/luukvbaal/nnn.nvim)
  - nvim-only, featuring explorer mode (`-F` flag)
- explorer mode for [nnn.vim](https://github.com/mcchrish/nnn.vim#explorer)
- remove option `-w`: always place HW cursor on current entry
- accept link name when linking a single target (#1201)
- option `-i` to show current file information in info bar
- force GNU sed on *BSD and Solaris
- add `nsxiv` support to nuke, preview-tabbed and imgview (#1230)
- fix preview-tui without `-a` (#1208)
- pass `pts` in env var for preview-tui to use in `tput` (#1235)
- disable editing file in picker mode (#1183)
- save session in picker mode (#1190)
- use nerd icons for gitstatus patch (#1220)

Package changes:
- Now includes plugins in share/examples/nnn/plugins

(sjmulder)