Migrate '.vim/plugin' to neovim

.config/nvim/lua/zk.lua

@@ -0,0 +1,22 @@
+vim.cmd([[
+let s:zk_preview_enabled = 0
+let s:live_server_job = -1
+au BufEnter /home/h/.zk/*.md silent exe '!echo "%" > /home/h/.zk/current-zettel.txt'
+function! ToggleZKPreview()
+    if s:zk_preview_enabled == 1
+        let s:zk_preview_enabled = 0
+        call jobstop(s:live_server_job)
+        au! ZKPreview
+    else
+        let s:zk_preview_enabled = 1
+        let s:live_server_job = jobstart('live-server --watch=/home/h/.zk/current-zettel-content.html --open=current-zettel-content.html --port=8080')
+        augroup ZKPreview
+          au BufEnter /home/h/.zk/*.md silent exe '!cat "%:r.html" > /home/h/.zk/current-zettel-content.html'
+          au BufWritePost /home/h/.zk/*.md silent exe '!make && cat "%:r.html" > /home/h/.zk/current-zettel-content.html'
+        augroup END
+    endif
+endfunction
+command! ToggleZKPreview call ToggleZKPreview()
+
+nn <leader>o :ToggleZKPreview<cr> :!xdg-open http://localhost:8080/%:t:r.html & <cr>
+]])